100563918 has 64 divisors (see below), whose sum is σ = 251328000. Its totient is φ = 26116992.

The previous prime is 100563901. The next prime is 100563943. The reversal of 100563918 is 819365001.

It is a super-2 number, since 2×100563918² = 20226203207021448, 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 31 ways as a sum of consecutive naturals, for example, 35208 + ... + 37956.

It is an arithmetic number, because the mean of its divisors is an integer number (3927000).

Almost surely, 2^100563918 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 100563918, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125664000).

100563918 is an abundant number, since it is smaller than the sum of its proper divisors (150764082).

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

100563918 is a wasteful number, since it uses less digits than its factorization.

100563918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2841.

The product of its (nonzero) digits is 6480, while the sum is 33.

The square root of 100563918 is about 10028.1562612476. The cubic root of 100563918 is about 465.0297402646.

The spelling of 100563918 in words is "one hundred million, five hundred sixty-three thousand, nine hundred eighteen".