18157004147 has 8 divisors (see below), whose sum is σ = 18491513280. Its totient is φ = 17823387240.

The previous prime is 18157004101. The next prime is 18157004153. The reversal of 18157004147 is 74140075181.

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

It is a cyclic number.

It is not a de Polignac number, because 18157004147 - 2¹⁸ = 18156742003 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 18157004147.

It is not an unprimeable number, because it can be changed into a prime (18157004167) 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, 181913 + ... + 263450.

It is an arithmetic number, because the mean of its divisors is an integer number (2311439160).

Almost surely, 2^18157004147 is an apocalyptic number.

18157004147 is a deficient number, since it is larger than the sum of its proper divisors (334509133).

18157004147 is an equidigital number, since it uses as much as digits as its factorization.

18157004147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446113.

The product of its (nonzero) digits is 31360, while the sum is 38.

The spelling of 18157004147 in words is "eighteen billion, one hundred fifty-seven million, four thousand, one hundred forty-seven".