1913299444 has 24 divisors (see below), whose sum is σ = 3833020800. Its totient is φ = 818609376.

The previous prime is 1913299441. The next prime is 1913299463. The reversal of 1913299444 is 4449923191.

It is a junction number, because it is equal to n+sod(n) for n = 1913299394 and 1913299403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1913299441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40267 + ... + 73810.

It is an arithmetic number, because the mean of its divisors is an integer number (159709200).

Almost surely, 2^1913299444 is an apocalyptic number.

1913299444 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1913299444 is an abundant number, since it is smaller than the sum of its proper divisors (1919721356).

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

1913299444 is a wasteful number, since it uses less digits than its factorization.

1913299444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114687 (or 114685 counting only the distinct ones).

The product of its digits is 279936, while the sum is 46.

The square root of 1913299444 is about 43741.2784906889. The cubic root of 1913299444 is about 1241.4454709640.

The spelling of 1913299444 in words is "one billion, nine hundred thirteen million, two hundred ninety-nine thousand, four hundred forty-four".