18973708 has 12 divisors (see below), whose sum is σ = 35758240. Its totient is φ = 8757072.

The previous prime is 18973657. The next prime is 18973709. The reversal of 18973708 is 80737981.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (18973709) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 182388 + ... + 182491.

Almost surely, 2^18973708 is an apocalyptic number.

It is an amenable number.

18973708 is a deficient number, since it is larger than the sum of its proper divisors (16784532).

18973708 is a wasteful number, since it uses less digits than its factorization.

18973708 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364896 (or 364894 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 43.

The square root of 18973708 is about 4355.8820002383. The cubic root of 18973708 is about 266.7170245175.

The spelling of 18973708 in words is "eighteen million, nine hundred seventy-three thousand, seven hundred eight".