91851792 has 40 divisors (see below), whose sum is σ = 237853824. Its totient is φ = 30543744.

The previous prime is 91851769. The next prime is 91851817. The reversal of 91851792 is 29715819.

It is a super-2 number, since 2×91851792² = 16873503387222528, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20158 + ... + 24290.

Almost surely, 2^91851792 is an apocalyptic number.

It is an amenable number.

91851792 is an abundant number, since it is smaller than the sum of its proper divisors (146002032).

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

91851792 is a wasteful number, since it uses less digits than its factorization.

91851792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4607 (or 4601 counting only the distinct ones).

The product of its digits is 45360, while the sum is 42.

The square root of 91851792 is about 9583.9340565344. The cubic root of 91851792 is about 451.1931988060.

The spelling of 91851792 in words is "ninety-one million, eight hundred fifty-one thousand, seven hundred ninety-two".