18741197139 has 24 divisors (see below), whose sum is σ = 29175303168. Its totient is φ = 10669715280.

The previous prime is 18741197113. The next prime is 18741197149. The reversal of 18741197139 is 93179114781.

It is not a de Polignac number, because 18741197139 - 2¹⁵ = 18741164371 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18741197091 and 18741197100.

It is not an unprimeable number, because it can be changed into a prime (18741197149) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 195387 + ... + 275060.

It is an arithmetic number, because the mean of its divisors is an integer number (1215637632).

Almost surely, 2^18741197139 is an apocalyptic number.

18741197139 is a deficient number, since it is larger than the sum of its proper divisors (10434106029).

18741197139 is a wasteful number, since it uses less digits than its factorization.

18741197139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470735 (or 470728 counting only the distinct ones).

The product of its digits is 381024, while the sum is 51.

The spelling of 18741197139 in words is "eighteen billion, seven hundred forty-one million, one hundred ninety-seven thousand, one hundred thirty-nine".