9911011902 has 64 divisors (see below), whose sum is σ = 21803330304. Its totient is φ = 2978519040.

The previous prime is 9911011897. The next prime is 9911011921. The reversal of 9911011902 is 2091101199.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8143198 + ... + 8144414.

It is an arithmetic number, because the mean of its divisors is an integer number (340677036).

Almost surely, 2^9911011902 is an apocalyptic number.

9911011902 is an abundant number, since it is smaller than the sum of its proper divisors (11892318402).

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

9911011902 is a wasteful number, since it uses less digits than its factorization.

9911011902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2153.

The product of its (nonzero) digits is 1458, while the sum is 33.

The square root of 9911011902 is about 99554.0652208638. The cubic root of 9911011902 is about 2148.0250045638.

The spelling of 9911011902 in words is "nine billion, nine hundred eleven million, eleven thousand, nine hundred two".