100618945 has 16 divisors (see below), whose sum is σ = 138878208. Its totient is φ = 68552640.

The previous prime is 100618939. The next prime is 100618957. The reversal of 100618945 is 549816001.

It is not a de Polignac number, because 100618945 - 2⁵ = 100618913 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 100618945.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3661 + ... + 14650.

It is an arithmetic number, because the mean of its divisors is an integer number (8679888).

Almost surely, 2^100618945 is an apocalyptic number.

It is an amenable number.

100618945 is a deficient number, since it is larger than the sum of its proper divisors (38259263).

100618945 is a wasteful number, since it uses less digits than its factorization.

100618945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18480.

The product of its (nonzero) digits is 8640, while the sum is 34.

The square root of 100618945 is about 10030.8995110110. The cubic root of 100618945 is about 465.1145437942.

The spelling of 100618945 in words is "one hundred million, six hundred eighteen thousand, nine hundred forty-five".