2516531634 has 12 divisors (see below), whose sum is σ = 5452485246. Its totient is φ = 838843872.

The previous prime is 2516531623. The next prime is 2516531639. The reversal of 2516531634 is 4361356152.

2516531634 is a `hidden beast` number, since 2 + 5 + 16 + 5 + 3 + 1 + 634 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1533897225 + 982634409 = 39165^2 + 31347^2 .

It is not an unprimeable number, because it can be changed into a prime (2516531639) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 69903639 + ... + 69903674.

Almost surely, 2^2516531634 is an apocalyptic number.

2516531634 is an abundant number, since it is smaller than the sum of its proper divisors (2935953612).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2516531634 is a wasteful number, since it uses less digits than its factorization.

2516531634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139807321 (or 139807318 counting only the distinct ones).

The product of its digits is 64800, while the sum is 36.

The square root of 2516531634 is about 50165.0439449623. The cubic root of 2516531634 is about 1360.1938222173.

Adding to 2516531634 its reverse (4361356152), we get a palindrome (6877887786).

The spelling of 2516531634 in words is "two billion, five hundred sixteen million, five hundred thirty-one thousand, six hundred thirty-four".