2170391139 has 64 divisors (see below), whose sum is σ = 3903482880. Its totient is φ = 1163496960.

The previous prime is 2170391081. The next prime is 2170391183. The reversal of 2170391139 is 9311930712.

It is a happy number.

It is not a de Polignac number, because 2170391139 - 2¹⁷ = 2170260067 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2170391939) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1197544 + ... + 1199354.

It is an arithmetic number, because the mean of its divisors is an integer number (60991920).

Almost surely, 2^2170391139 is an apocalyptic number.

2170391139 is a deficient number, since it is larger than the sum of its proper divisors (1733091741).

2170391139 is a wasteful number, since it uses less digits than its factorization.

2170391139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2217 (or 2211 counting only the distinct ones).

The product of its (nonzero) digits is 10206, while the sum is 36.

The square root of 2170391139 is about 46587.4568848741. The cubic root of 2170391139 is about 1294.7303720543.

The spelling of 2170391139 in words is "two billion, one hundred seventy million, three hundred ninety-one thousand, one hundred thirty-nine".