18972202 has 16 divisors (see below), whose sum is σ = 29316672. Its totient is φ = 9203040.

The previous prime is 18972199. The next prime is 18972229. The reversal of 18972202 is 20227981.

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, 13702 + ... + 15022.

It is an arithmetic number, because the mean of its divisors is an integer number (1832292).

Almost surely, 2^18972202 is an apocalyptic number.

18972202 is a deficient number, since it is larger than the sum of its proper divisors (10344470).

18972202 is a wasteful number, since it uses less digits than its factorization.

18972202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1533.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 18972202 is about 4355.7091271112. The cubic root of 18972202 is about 266.7099676212.

The spelling of 18972202 in words is "eighteen million, nine hundred seventy-two thousand, two hundred two".