18886942 has 16 divisors (see below), whose sum is σ = 29016000. Its totient is φ = 9217440.

The previous prime is 18886939. The next prime is 18886951. The reversal of 18886942 is 24968881.

It is a super-2 number, since 2×18886942² = 713433156222728, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18886892 and 18886901.

It is a congruent number.

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, 17659 + ... + 18697.

It is an arithmetic number, because the mean of its divisors is an integer number (1813500).

Almost surely, 2^18886942 is an apocalyptic number.

18886942 is a deficient number, since it is larger than the sum of its proper divisors (10129058).

18886942 is a wasteful number, since it uses less digits than its factorization.

18886942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1251.

The product of its digits is 221184, while the sum is 46.

The square root of 18886942 is about 4345.9109516878. The cubic root of 18886942 is about 266.3098411491.

The spelling of 18886942 in words is "eighteen million, eight hundred eighty-six thousand, nine hundred forty-two".