1915349856 has 48 divisors (see below), whose sum is σ = 5746051584. Its totient is φ = 547242624.

The previous prime is 1915349851. The next prime is 1915349857. The reversal of 1915349856 is 6589435191.

It is a tau number, because it is divible by the number of its divisors (48).

It is a junction number, because it is equal to n+sod(n) for n = 1915349799 and 1915349808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1915349851) 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, 1424440 + ... + 1425783.

It is an arithmetic number, because the mean of its divisors is an integer number (119709408).

Almost surely, 2^1915349856 is an apocalyptic number.

1915349856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1915349856 is an abundant number, since it is smaller than the sum of its proper divisors (3830701728).

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

1915349856 is a wasteful number, since it uses less digits than its factorization.

1915349856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2850243 (or 2850235 counting only the distinct ones).

The product of its digits is 1166400, while the sum is 51.

The square root of 1915349856 is about 43764.7101669827. The cubic root of 1915349856 is about 1241.8887829859. Note that the first 3 decimals are identical.

The spelling of 1915349856 in words is "one billion, nine hundred fifteen million, three hundred forty-nine thousand, eight hundred fifty-six".