9918100 has 18 divisors (see below), whose sum is σ = 21522494. Its totient is φ = 3967200.

The previous prime is 9918091. The next prime is 9918121. The reversal of 9918100 is 18199.

9918100 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 407044 + 9511056 = 638^2 + 3084^2 .

It is a super-2 number, since 2×9918100² = 196737415220000, which 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, 49491 + ... + 49690.

Almost surely, 2^9918100 is an apocalyptic number.

It is an amenable number.

9918100 is an abundant number, since it is smaller than the sum of its proper divisors (11604394).

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

9918100 is a wasteful number, since it uses less digits than its factorization.

9918100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99195 (or 99188 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 28.

The square root of 9918100 is about 3149.3015098590. The cubic root of 9918100 is about 214.8536953082.

The spelling of 9918100 in words is "nine million, nine hundred eighteen thousand, one hundred".