9091010100 has 72 divisors (see below), whose sum is σ = 27850592448. Its totient is φ = 2281664000.

The previous prime is 9091010099. The next prime is 9091010141. The reversal of 9091010100 is 10101909.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 886176 + ... + 896375.

It is an arithmetic number, because the mean of its divisors is an integer number (386813784).

Almost surely, 2^9091010100 is an apocalyptic number.

It is an amenable number.

9091010100 is an abundant number, since it is smaller than the sum of its proper divisors (18759582348).

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

9091010100 is a wasteful number, since it uses less digits than its factorization.

9091010100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1782585 (or 1782578 counting only the distinct ones).

The product of its (nonzero) digits is 81, while the sum is 21.

The square root of 9091010100 is about 95346.7886192293. The cubic root of 9091010100 is about 2087.0717521841.

The spelling of 9091010100 in words is "nine billion, ninety-one million, ten thousand, one hundred".