1901615916 has 48 divisors (see below), whose sum is σ = 4553152128. Its totient is φ = 617347200.

The previous prime is 1901615897. The next prime is 1901615923. The reversal of 1901615916 is 6195161091.

It is a happy number.

It is a super-2 number, since 2×1901615916² = 7232286183969038112, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 313351 + ... + 319361.

It is an arithmetic number, because the mean of its divisors is an integer number (94857336).

Almost surely, 2^1901615916 is an apocalyptic number.

It is an amenable number.

1901615916 is an abundant number, since it is smaller than the sum of its proper divisors (2651536212).

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

1901615916 is a wasteful number, since it uses less digits than its factorization.

1901615916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6702 (or 6700 counting only the distinct ones).

The product of its (nonzero) digits is 14580, while the sum is 39.

The square root of 1901615916 is about 43607.5213237350. The cubic root of 1901615916 is about 1238.9133551679.

The spelling of 1901615916 in words is "one billion, nine hundred one million, six hundred fifteen thousand, nine hundred sixteen".