18977075 has 12 divisors (see below), whose sum is σ = 25342128. Its totient is φ = 14013600.

The previous prime is 18977033. The next prime is 18977081. The reversal of 18977075 is 57077981.

It is not a de Polignac number, because 18977075 - 2⁶ = 18977011 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28871 + ... + 29520.

It is an arithmetic number, because the mean of its divisors is an integer number (2111844).

Almost surely, 2^18977075 is an apocalyptic number.

18977075 is a deficient number, since it is larger than the sum of its proper divisors (6365053).

18977075 is a wasteful number, since it uses less digits than its factorization.

18977075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58414 (or 58409 counting only the distinct ones).

The product of its (nonzero) digits is 123480, while the sum is 44.

The square root of 18977075 is about 4356.2684719838. The cubic root of 18977075 is about 266.7328004376.

The spelling of 18977075 in words is "eighteen million, nine hundred seventy-seven thousand, seventy-five".