18927473206 has 16 divisors (see below), whose sum is σ = 28892994480. Its totient is φ = 9296866080.

The previous prime is 18927473189. The next prime is 18927473231. The reversal of 18927473206 is 60237472981.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 18927473206.

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, 96 + ... + 194563.

It is an arithmetic number, because the mean of its divisors is an integer number (1805812155).

Almost surely, 2^18927473206 is an apocalyptic number.

18927473206 is a deficient number, since it is larger than the sum of its proper divisors (9965521274).

18927473206 is a wasteful number, since it uses less digits than its factorization.

18927473206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195519.

The product of its (nonzero) digits is 1016064, while the sum is 49.

The spelling of 18927473206 in words is "eighteen billion, nine hundred twenty-seven million, four hundred seventy-three thousand, two hundred six".