18750720241 has 8 divisors (see below), whose sum is σ = 20460009024. Its totient is φ = 17042211120.

The previous prime is 18750720193. The next prime is 18750720259. The reversal of 18750720241 is 14202705781.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 18750720241 - 2³¹ = 16603236593 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18750720241.

It is not an unprimeable number, because it can be changed into a prime (18750720041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144046 + ... + 241351.

It is an arithmetic number, because the mean of its divisors is an integer number (2557501128).

Almost surely, 2^18750720241 is an apocalyptic number.

18750720241 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

18750720241 is a deficient number, since it is larger than the sum of its proper divisors (1709288783).

18750720241 is a wasteful number, since it uses less digits than its factorization.

18750720241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389831.

The product of its (nonzero) digits is 31360, while the sum is 37.

The spelling of 18750720241 in words is "eighteen billion, seven hundred fifty million, seven hundred twenty thousand, two hundred forty-one".