2398171139 has 16 divisors (see below), whose sum is σ = 3023590080. Its totient is φ = 1851171840.

The previous prime is 2398171123. The next prime is 2398171157. The reversal of 2398171139 is 9311718932.

It is not a de Polignac number, because 2398171139 - 2⁴ = 2398171123 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2398171139.

It is not an unprimeable number, because it can be changed into a prime (2398171109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 317654 + ... + 325115.

It is an arithmetic number, because the mean of its divisors is an integer number (188974380).

Almost surely, 2^2398171139 is an apocalyptic number.

2398171139 is a deficient number, since it is larger than the sum of its proper divisors (625418941).

2398171139 is a wasteful number, since it uses less digits than its factorization.

2398171139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 642830.

The product of its digits is 81648, while the sum is 44.

The square root of 2398171139 is about 48971.1255639484. The cubic root of 2398171139 is about 1338.5257304619.

The spelling of 2398171139 in words is "two billion, three hundred ninety-eight million, one hundred seventy-one thousand, one hundred thirty-nine".