992157990 has 32 divisors (see below), whose sum is σ = 2382017760. Its totient is φ = 264482304.

The previous prime is 992157931. The next prime is 992158019. The reversal of 992157990 is 99751299.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 143902 + ... + 150638.

It is an arithmetic number, because the mean of its divisors is an integer number (74438055).

Almost surely, 2^992157990 is an apocalyptic number.

992157990 is an abundant number, since it is smaller than the sum of its proper divisors (1389859770).

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

992157990 is a wasteful number, since it uses less digits than its factorization.

992157990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11656.

The product of its (nonzero) digits is 459270, while the sum is 51.

The square root of 992157990 is about 31498.5394899510. The cubic root of 992157990 is about 997.3791337275.

The spelling of 992157990 in words is "nine hundred ninety-two million, one hundred fifty-seven thousand, nine hundred ninety".