18705995 has 36 divisors (see below), whose sum is σ = 28747152. Its totient is φ = 11642400.

The previous prime is 18705983. The next prime is 18706003. The reversal of 18705995 is 59950781.

It is a happy number.

It is not a de Polignac number, because 18705995 - 2¹² = 18701899 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 29330 + ... + 29960.

It is an arithmetic number, because the mean of its divisors is an integer number (798532).

Almost surely, 2^18705995 is an apocalyptic number.

18705995 is a deficient number, since it is larger than the sum of its proper divisors (10041157).

18705995 is a wasteful number, since it uses less digits than its factorization.

18705995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 672 (or 654 counting only the distinct ones).

The product of its (nonzero) digits is 113400, while the sum is 44.

The square root of 18705995 is about 4325.0427743550. The cubic root of 18705995 is about 265.4566470922.

The spelling of 18705995 in words is "eighteen million, seven hundred five thousand, nine hundred ninety-five".