991806162 has 16 divisors (see below), whose sum is σ = 1985306112. Its totient is φ = 330319760.

The previous prime is 991806149. The next prime is 991806191. The reversal of 991806162 is 261608199.

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, 62898 + ... + 77069.

It is an arithmetic number, because the mean of its divisors is an integer number (124081632).

Almost surely, 2^991806162 is an apocalyptic number.

991806162 is an abundant number, since it is smaller than the sum of its proper divisors (993499950).

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

991806162 is a wasteful number, since it uses less digits than its factorization.

991806162 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141153.

The product of its (nonzero) digits is 46656, while the sum is 42.

The square root of 991806162 is about 31492.9541643841. The cubic root of 991806162 is about 997.2612266349.

The spelling of 991806162 in words is "nine hundred ninety-one million, eight hundred six thousand, one hundred sixty-two".