9011820990 has 16 divisors (see below), whose sum is σ = 21628370448. Its totient is φ = 2403152256.

The previous prime is 9011820967. The next prime is 9011821001. The reversal of 9011820990 is 990281109.

It is a happy number.

It is a congruent number.

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, 150196987 + ... + 150197046.

It is an arithmetic number, because the mean of its divisors is an integer number (1351773153).

Almost surely, 2^9011820990 is an apocalyptic number.

9011820990 is an abundant number, since it is smaller than the sum of its proper divisors (12616549458).

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

9011820990 is a wasteful number, since it uses less digits than its factorization.

9011820990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300394043.

The product of its (nonzero) digits is 11664, while the sum is 39.

The square root of 9011820990 is about 94930.6114485733. The cubic root of 9011820990 is about 2080.9941153724.

The spelling of 9011820990 in words is "nine billion, eleven million, eight hundred twenty thousand, nine hundred ninety".