1913457105 has 36 divisors (see below), whose sum is σ = 3858158772. Its totient is φ = 874722240.

The previous prime is 1913457103. The next prime is 1913457107. The reversal of 1913457105 is 5017543191.

It is a happy number.

1913457105 is a `hidden beast` number, since 191 + 3 + 457 + 10 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (1913457103) and next prime (1913457107).

It can be written as a sum of positive squares in 2 ways, for example, as 692373969 + 1221083136 = 26313^2 + 34944^2 .

It is not a de Polignac number, because 1913457105 - 2¹ = 1913457103 is a prime.

It is a super-2 number, since 2×1913457105² = 7322636185349962050, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1913457105.

It is not an unprimeable number, because it can be changed into a prime (1913457103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 431686 + ... + 436095.

It is an arithmetic number, because the mean of its divisors is an integer number (107171077).

Almost surely, 2^1913457105 is an apocalyptic number.

1913457105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1913457105 is an abundant number, since it is smaller than the sum of its proper divisors (1944701667).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1913457105 is a wasteful number, since it uses less digits than its factorization.

1913457105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 867806 (or 867796 counting only the distinct ones).

The product of its (nonzero) digits is 18900, while the sum is 36.

The square root of 1913457105 is about 43743.0806528301. The cubic root of 1913457105 is about 1241.4795695050.

The spelling of 1913457105 in words is "one billion, nine hundred thirteen million, four hundred fifty-seven thousand, one hundred five".