1913152977 has 12 divisors (see below), whose sum is σ = 2763904884. Its totient is φ = 1275222240.

The previous prime is 1913152957. The next prime is 1913152979. The reversal of 1913152977 is 7792513191.

It is a happy number.

1913152977 is a `hidden beast` number, since 1 + 91 + 31 + 529 + 7 + 7 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1848656016 + 64496961 = 42996^2 + 8031^2 .

It is not a de Polignac number, because 1913152977 - 2⁸ = 1913152721 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1913152979) 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 11 ways as a sum of consecutive naturals, for example, 54643 + ... + 82535.

It is an arithmetic number, because the mean of its divisors is an integer number (230325407).

Almost surely, 2^1913152977 is an apocalyptic number.

It is an amenable number.

1913152977 is a deficient number, since it is larger than the sum of its proper divisors (850751907).

1913152977 is a wasteful number, since it uses less digits than its factorization.

1913152977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35520 (or 35517 counting only the distinct ones).

The product of its digits is 119070, while the sum is 45.

The square root of 1913152977 is about 43739.6042163164. The cubic root of 1913152977 is about 1241.4137917559.

The spelling of 1913152977 in words is "one billion, nine hundred thirteen million, one hundred fifty-two thousand, nine hundred seventy-seven".