91886897000 has 32 divisors (see below), whose sum is σ = 215015341320. Its totient is φ = 36754758400.

The previous prime is 91886896991. The next prime is 91886897023. The reversal of 91886897000 is 79868819.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 13758820804 + 78128076196 = 117298^2 + 279514^2 .

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, 45942449 + ... + 45944448.

Almost surely, 2^91886897000 is an apocalyptic number.

It is an amenable number.

91886897000 is an abundant number, since it is smaller than the sum of its proper divisors (123128444320).

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

91886897000 is a wasteful number, since it uses less digits than its factorization.

91886897000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91886918 (or 91886904 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 56.

The spelling of 91886897000 in words is "ninety-one billion, eight hundred eighty-six million, eight hundred ninety-seven thousand".