991052046 has 48 divisors (see below), whose sum is σ = 2312893440. Its totient is φ = 305681040.

The previous prime is 991052033. The next prime is 991052053. The reversal of 991052046 is 640250199.

991052046 is a `hidden beast` number, since 9 + 91 + 0 + 520 + 46 = 666.

It is a super-2 number, since 2×991052046² = 1964368315761572232, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 991052046.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18990 + ... + 48401.

It is an arithmetic number, because the mean of its divisors is an integer number (48185280).

Almost surely, 2^991052046 is an apocalyptic number.

991052046 is an abundant number, since it is smaller than the sum of its proper divisors (1321841394).

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

991052046 is a wasteful number, since it uses less digits than its factorization.

991052046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67461 (or 67458 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 991052046 is about 31480.9791143795. The cubic root of 991052046 is about 997.0084079683.

The spelling of 991052046 in words is "nine hundred ninety-one million, fifty-two thousand, forty-six".