18400130747 has 6 divisors (see below), whose sum is σ = 18910873548. Its totient is φ = 17902828584.

The previous prime is 18400130729. The next prime is 18400130767. The reversal of 18400130747 is 74703100481.

It is a de Polignac number, because none of the positive numbers 2^k-18400130747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18400130767) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6718913 + ... + 6721650.

It is an arithmetic number, because the mean of its divisors is an integer number (3151812258).

Almost surely, 2^18400130747 is an apocalyptic number.

18400130747 is a deficient number, since it is larger than the sum of its proper divisors (510742801).

18400130747 is an equidigital number, since it uses as much as digits as its factorization.

18400130747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13440637 (or 13440600 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 35.

The spelling of 18400130747 in words is "eighteen billion, four hundred million, one hundred thirty thousand, seven hundred forty-seven".