18701467246139 has 4 divisors (see below), whose sum is σ = 19018441267320. Its totient is φ = 18384493224960.

The previous prime is 18701467246127. The next prime is 18701467246153. The reversal of 18701467246139 is 93164276410781.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 18701467246139 - 2¹² = 18701467242043 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (59), and also a Moran number because the ratio is a prime number: 316974021121 = 18701467246139 / (1 + 8 + 7 + 0 + 1 + 4 + 6 + 7 + 2 + 4 + 6 + 1 + 3 + 9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18701467246169) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 158487010502 + ... + 158487010619.

It is an arithmetic number, because the mean of its divisors is an integer number (4754610316830).

Almost surely, 2^{18701467246139} is an apocalyptic number.

18701467246139 is a deficient number, since it is larger than the sum of its proper divisors (316974021181).

18701467246139 is an equidigital number, since it uses as much as digits as its factorization.

18701467246139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316974021180.

The product of its (nonzero) digits is 12192768, while the sum is 59.

The spelling of 18701467246139 in words is "eighteen trillion, seven hundred one billion, four hundred sixty-seven million, two hundred forty-six thousand, one hundred thirty-nine".