90291836196 has 81 divisors (see below), whose sum is σ = 232323612339. Its totient is φ = 29567822400.

The previous prime is 90291836183. The next prime is 90291836291. The reversal of 90291836196 is 69163819209.

The square root of 90291836196 is 300486.

It is a perfect power (a square), and thus also a powerful number.

90291836196 is a `hidden beast` number, since 9 + 0 + 2 + 9 + 18 + 3 + 619 + 6 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 50035426596 + 40256409600 = 223686^2 + 200640^2 .

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 26 ways as a sum of consecutive naturals, for example, 109977466 + ... + 109978286.

Almost surely, 2^90291836196 is an apocalyptic number.

90291836196 is the 300486-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 90291836196

90291836196 is an abundant number, since it is smaller than the sum of its proper divisors (142031776143).

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

90291836196 is an equidigital number, since it uses as much as digits as its factorization.

90291836196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1774 (or 887 counting only the distinct ones).

The product of its (nonzero) digits is 1259712, while the sum is 54.

The spelling of 90291836196 in words is "ninety billion, two hundred ninety-one million, eight hundred thirty-six thousand, one hundred ninety-six".