18750920356 has 27 divisors (see below), whose sum is σ = 38175419457. Its totient is φ = 8035287120.

The previous prime is 18750920341. The next prime is 18750920359. The reversal of 18750920356 is 65302905781.

The square root of 18750920356 is 136934.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 8075897956 + 10675022400 = 89866^2 + 103320^2 .

It is not an unprimeable number, because it can be changed into a prime (18750920359) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1912186 + ... + 1921966.

Almost surely, 2^18750920356 is an apocalyptic number.

18750920356 is the 136934-th square number.

It is an amenable number.

18750920356 is an abundant number, since it is smaller than the sum of its proper divisors (19424499101).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18750920356 is an frugal number, since it uses more digits than its factorization.

18750920356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19580 (or 9790 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 46.

The spelling of 18750920356 in words is "eighteen billion, seven hundred fifty million, nine hundred twenty thousand, three hundred fifty-six".