18686874350 has 12 divisors (see below), whose sum is σ = 34757586384. Its totient is φ = 7474749720.

The previous prime is 18686874347. The next prime is 18686874373. The reversal of 18686874350 is 5347868681.

It is a hoax number, since the sum of its digits (56) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 186868694 + ... + 186868793.

It is an arithmetic number, because the mean of its divisors is an integer number (2896465532).

Almost surely, 2^18686874350 is an apocalyptic number.

18686874350 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18686874350 is a deficient number, since it is larger than the sum of its proper divisors (16070712034).

18686874350 is a wasteful number, since it uses less digits than its factorization.

18686874350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373737499 (or 373737494 counting only the distinct ones).

The product of its (nonzero) digits is 7741440, while the sum is 56.

The spelling of 18686874350 in words is "eighteen billion, six hundred eighty-six million, eight hundred seventy-four thousand, three hundred fifty".