9190090100 has 18 divisors (see below), whose sum is σ = 19942495734. Its totient is φ = 3676036000.

The previous prime is 9190090097. The next prime is 9190090127. The reversal of 9190090100 is 10900919.

It can be written as a sum of positive squares in 3 ways, for example, as 111049444 + 9079040656 = 10538^2 + 95284^2 .

It is a super-2 number, since 2×9190090100² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 45950351 + ... + 45950550.

Almost surely, 2^9190090100 is an apocalyptic number.

It is an amenable number.

9190090100 is an abundant number, since it is smaller than the sum of its proper divisors (10752405634).

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

9190090100 is a wasteful number, since it uses less digits than its factorization.

9190090100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91900915 (or 91900908 counting only the distinct ones).

The product of its (nonzero) digits is 729, while the sum is 29.

The square root of 9190090100 is about 95864.9576226892. The cubic root of 9190090100 is about 2094.6264810667.

The spelling of 9190090100 in words is "nine billion, one hundred ninety million, ninety thousand, one hundred".