2516158538 has 4 divisors (see below), whose sum is σ = 3774237810. Its totient is φ = 1258079268.

The previous prime is 2516158501. The next prime is 2516158549. The reversal of 2516158538 is 8358516152.

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., 2251217809 + 264940729 = 47447^2 + 16277^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 629039633 + ... + 629039636.

Almost surely, 2^2516158538 is an apocalyptic number.

2516158538 is a deficient number, since it is larger than the sum of its proper divisors (1258079272).

2516158538 is a wasteful number, since it uses less digits than its factorization.

2516158538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1258079271.

The product of its digits is 288000, while the sum is 44.

The square root of 2516158538 is about 50161.3251220500. The cubic root of 2516158538 is about 1360.1265990136.

The spelling of 2516158538 in words is "two billion, five hundred sixteen million, one hundred fifty-eight thousand, five hundred thirty-eight".