18969886 has 32 divisors (see below), whose sum is σ = 32104800. Its totient is φ = 8346240.

The previous prime is 18969877. The next prime is 18969901. The reversal of 18969886 is 68896981.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104716 + ... + 104896.

It is an arithmetic number, because the mean of its divisors is an integer number (1003275).

Almost surely, 2^18969886 is an apocalyptic number.

18969886 is a deficient number, since it is larger than the sum of its proper divisors (13134914).

18969886 is a wasteful number, since it uses less digits than its factorization.

18969886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364.

The product of its digits is 1492992, while the sum is 55.

The square root of 18969886 is about 4355.4432610241. The cubic root of 18969886 is about 266.6991144544.

The spelling of 18969886 in words is "eighteen million, nine hundred sixty-nine thousand, eight hundred eighty-six".