18808042 has 16 divisors (see below), whose sum is σ = 31212864. Its totient is φ = 8428000.

The previous prime is 18808033. The next prime is 18808051. The reversal of 18808042 is 24080881.

It is an interprime number because it is at equal distance from previous prime (18808033) and next prime (18808051).

It is a junction number, because it is equal to n+sod(n) for n = 18807995 and 18808013.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4459 + ... + 7582.

It is an arithmetic number, because the mean of its divisors is an integer number (1950804).

Almost surely, 2^18808042 is an apocalyptic number.

18808042 is a deficient number, since it is larger than the sum of its proper divisors (12404822).

18808042 is a wasteful number, since it uses less digits than its factorization.

18808042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12125.

The product of its (nonzero) digits is 4096, while the sum is 31.

The square root of 18808042 is about 4336.8239530790. The cubic root of 18808042 is about 265.9384880473.

The spelling of 18808042 in words is "eighteen million, eight hundred eight thousand, forty-two".