9918100100 has 18 divisors (see below), whose sum is σ = 21522277434. Its totient is φ = 3967240000.

The previous prime is 9918100099. The next prime is 9918100123. The reversal of 9918100100 is 10018199.

It can be written as a sum of positive squares in 3 ways, for example, as 997675396 + 8920424704 = 31586^2 + 94448^2 .

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, 49590401 + ... + 49590600.

Almost surely, 2^9918100100 is an apocalyptic number.

It is an amenable number.

9918100100 is an abundant number, since it is smaller than the sum of its proper divisors (11604177334).

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

9918100100 is a wasteful number, since it uses less digits than its factorization.

9918100100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99181015 (or 99181008 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 29.

The square root of 9918100100 is about 99589.6585996759. The cubic root of 9918100100 is about 2148.5369603030.

Adding to 9918100100 its reverse (10018199), we get a palindrome (9928118299).

The spelling of 9918100100 in words is "nine billion, nine hundred eighteen million, one hundred thousand, one hundred".