2139375489 has 16 divisors (see below), whose sum is σ = 3038836032. Its totient is φ = 1334112768.

The previous prime is 2139375473. The next prime is 2139375499. The reversal of 2139375489 is 9845739312.

It is not a de Polignac number, because 2139375489 - 2⁴ = 2139375473 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (2139375439) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 120364 + ... + 136989.

It is an arithmetic number, because the mean of its divisors is an integer number (189927252).

Almost surely, 2^2139375489 is an apocalyptic number.

It is an amenable number.

2139375489 is a deficient number, since it is larger than the sum of its proper divisors (899460543).

2139375489 is a wasteful number, since it uses less digits than its factorization.

2139375489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257536.

The product of its digits is 1632960, while the sum is 51.

The square root of 2139375489 is about 46253.3835410989. The cubic root of 2139375489 is about 1288.5333749629.

The spelling of 2139375489 in words is "two billion, one hundred thirty-nine million, three hundred seventy-five thousand, four hundred eighty-nine".