2172591362 has 18 divisors (see below), whose sum is σ = 3409117257. Its totient is φ = 1038340336.

The previous prime is 2172591331. The next prime is 2172591367. The reversal of 2172591362 is 2631952712.

It can be written as a sum of positive squares in 2 ways, for example, as 1903664161 + 268927201 = 43631^2 + 16399^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=32959.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2172591367) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1515398 + ... + 1516830.

Almost surely, 2^2172591362 is an apocalyptic number.

2172591362 is a deficient number, since it is larger than the sum of its proper divisors (1236525895).

2172591362 is an frugal number, since it uses more digits than its factorization.

2172591362 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2914 (or 1458 counting only the distinct ones).

The product of its digits is 45360, while the sum is 38.

The square root of 2172591362 is about 46611.0648022548. The cubic root of 2172591362 is about 1295.1677330776.

The spelling of 2172591362 in words is "two billion, one hundred seventy-two million, five hundred ninety-one thousand, three hundred sixty-two".