2165142626 has 12 divisors (see below), whose sum is σ = 3281569218. Its totient is φ = 1071401472.

The previous prime is 2165142607. The next prime is 2165142649. The reversal of 2165142626 is 6262415612.

It can be written as a sum of positive squares in 3 ways, for example, as 1274418601 + 890724025 = 35699^2 + 29845^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 38711 + ... + 76346.

Almost surely, 2^2165142626 is an apocalyptic number.

2165142626 is a deficient number, since it is larger than the sum of its proper divisors (1116426592).

2165142626 is an equidigital number, since it uses as much as digits as its factorization.

2165142626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115253 (or 115156 counting only the distinct ones).

The product of its digits is 34560, while the sum is 35.

The square root of 2165142626 is about 46531.0931098765. The cubic root of 2165142626 is about 1293.6858761157.

The spelling of 2165142626 in words is "two billion, one hundred sixty-five million, one hundred forty-two thousand, six hundred twenty-six".