18729383250 has 32 divisors (see below), whose sum is σ = 46748542464. Its totient is φ = 4994502000.

The previous prime is 18729383249. The next prime is 18729383251. The reversal of 18729383250 is 5238392781.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (18729383249) and next prime (18729383251).

It is a self number, because there is not a number n which added to its sum of digits gives 18729383250.

It is not an unprimeable number, because it can be changed into a prime (18729383251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12485506 + ... + 12487005.

It is an arithmetic number, because the mean of its divisors is an integer number (1460891952).

Almost surely, 2^18729383250 is an apocalyptic number.

18729383250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18729383250 is an abundant number, since it is smaller than the sum of its proper divisors (28019159214).

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

18729383250 is a wasteful number, since it uses less digits than its factorization.

18729383250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24972531 (or 24972521 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 48.

The spelling of 18729383250 in words is "eighteen billion, seven hundred twenty-nine million, three hundred eighty-three thousand, two hundred fifty".