18809862 has 16 divisors (see below), whose sum is σ = 37688112. Its totient is φ = 6258560.

The previous prime is 18809807. The next prime is 18809873. The reversal of 18809862 is 26890881.

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, 1162 + ... + 6242.

It is an arithmetic number, because the mean of its divisors is an integer number (2355507).

Almost surely, 2^18809862 is an apocalyptic number.

18809862 is an abundant number, since it is smaller than the sum of its proper divisors (18878250).

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

18809862 is a wasteful number, since it uses less digits than its factorization.

18809862 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5703.

The product of its (nonzero) digits is 55296, while the sum is 42.

The square root of 18809862 is about 4337.0337789784. The cubic root of 18809862 is about 265.9470658042.

The spelling of 18809862 in words is "eighteen million, eight hundred nine thousand, eight hundred sixty-two".