18941572 has 24 divisors (see below), whose sum is σ = 35816256. Its totient is φ = 8713248.

The previous prime is 18941567. The next prime is 18941623. The reversal of 18941572 is 27514981.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28953 + ... + 29599.

It is an arithmetic number, because the mean of its divisors is an integer number (1492344).

Almost surely, 2^18941572 is an apocalyptic number.

It is an amenable number.

18941572 is a deficient number, since it is larger than the sum of its proper divisors (16874684).

18941572 is a wasteful number, since it uses less digits than its factorization.

18941572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1227 (or 1225 counting only the distinct ones).

The product of its digits is 20160, while the sum is 37.

The square root of 18941572 is about 4352.1916318103. The cubic root of 18941572 is about 266.5663588013.

The spelling of 18941572 in words is "eighteen million, nine hundred forty-one thousand, five hundred seventy-two".