18955107 has 32 divisors (see below), whose sum is σ = 29126400. Its totient is φ = 12177216.

The previous prime is 18955099. The next prime is 18955127. The reversal of 18955107 is 70155981.

It is not a de Polignac number, because 18955107 - 2³ = 18955099 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18955127) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 116208 + ... + 116370.

It is an arithmetic number, because the mean of its divisors is an integer number (910200).

Almost surely, 2^18955107 is an apocalyptic number.

18955107 is a deficient number, since it is larger than the sum of its proper divisors (10171293).

18955107 is a wasteful number, since it uses less digits than its factorization.

18955107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304 (or 298 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 36.

The square root of 18955107 is about 4353.7463178279. The cubic root of 18955107 is about 266.6298367539.

The spelling of 18955107 in words is "eighteen million, nine hundred fifty-five thousand, one hundred seven".