2576732138 has 4 divisors (see below), whose sum is σ = 3865098210. Its totient is φ = 1288366068.

The previous prime is 2576732087. The next prime is 2576732149. The reversal of 2576732138 is 8312376752.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1391513809 + 1185218329 = 37303^2 + 34427^2 .

It is a super-2 number, since 2×2576732138² = 13279097022004102088, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 644183033 + ... + 644183036.

Almost surely, 2^2576732138 is an apocalyptic number.

2576732138 is a deficient number, since it is larger than the sum of its proper divisors (1288366072).

2576732138 is a wasteful number, since it uses less digits than its factorization.

2576732138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1288366071.

The product of its digits is 423360, while the sum is 44.

The square root of 2576732138 is about 50761.5222190982. The cubic root of 2576732138 is about 1370.9546577501.

The spelling of 2576732138 in words is "two billion, five hundred seventy-six million, seven hundred thirty-two thousand, one hundred thirty-eight".