100918489 has 8 divisors (see below), whose sum is σ = 117689600. Its totient is φ = 86501268.

The previous prime is 100918487. The next prime is 100918523. The reversal of 100918489 is 984819001.

It is not a de Polignac number, because 100918489 - 2¹ = 100918487 is a prime.

It is not an unprimeable number, because it can be changed into a prime (100918483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 146769 + ... + 147454.

It is an arithmetic number, because the mean of its divisors is an integer number (14711200).

Almost surely, 2^100918489 is an apocalyptic number.

It is an amenable number.

100918489 is a deficient number, since it is larger than the sum of its proper divisors (16771111).

100918489 is an frugal number, since it uses more digits than its factorization.

100918489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294244 (or 294230 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 40.

The square root of 100918489 is about 10045.8194787683. The cubic root of 100918489 is about 465.5756373597.

The spelling of 100918489 in words is "one hundred million, nine hundred eighteen thousand, four hundred eighty-nine".