1901910864 has 40 divisors (see below), whose sum is σ = 5615166400. Its totient is φ = 543403008.

The previous prime is 1901910851. The next prime is 1901910893. The reversal of 1901910864 is 4680191091.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2829889 + ... + 2830560.

It is an arithmetic number, because the mean of its divisors is an integer number (140379160).

Almost surely, 2^1901910864 is an apocalyptic number.

1901910864 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1901910864 is an abundant number, since it is smaller than the sum of its proper divisors (3713255536).

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

1901910864 is a wasteful number, since it uses less digits than its factorization.

1901910864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5660467 (or 5660461 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 39.

The square root of 1901910864 is about 43610.9030404095. The cubic root of 1901910864 is about 1238.9774052778.

The spelling of 1901910864 in words is "one billion, nine hundred one million, nine hundred ten thousand, eight hundred sixty-four".