18867942 has 12 divisors (see below), whose sum is σ = 40880580. Its totient is φ = 6289308.

The previous prime is 18867923. The next prime is 18867967. The reversal of 18867942 is 24976881.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 524092 + ... + 524127.

It is an arithmetic number, because the mean of its divisors is an integer number (3406715).

Almost surely, 2^18867942 is an apocalyptic number.

18867942 is an abundant number, since it is smaller than the sum of its proper divisors (22012638).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18867942 is a wasteful number, since it uses less digits than its factorization.

18867942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1048227 (or 1048224 counting only the distinct ones).

The product of its digits is 193536, while the sum is 45.

The square root of 18867942 is about 4343.7244387737. The cubic root of 18867942 is about 266.2205098595.

The spelling of 18867942 in words is "eighteen million, eight hundred sixty-seven thousand, nine hundred forty-two".