1516061615 has 16 divisors (see below), whose sum is σ = 1931185152. Its totient is φ = 1138604544.

The previous prime is 1516061579. The next prime is 1516061639. The reversal of 1516061615 is 5161606151.

It is a cyclic number.

It is not a de Polignac number, because 1516061615 - 2⁸ = 1516061359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11282 + ... + 56208.

It is an arithmetic number, because the mean of its divisors is an integer number (120699072).

Almost surely, 2^1516061615 is an apocalyptic number.

1516061615 is a deficient number, since it is larger than the sum of its proper divisors (415123537).

1516061615 is a wasteful number, since it uses less digits than its factorization.

1516061615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45346.

The product of its (nonzero) digits is 5400, while the sum is 32.

The square root of 1516061615 is about 38936.6358973140. The cubic root of 1516061615 is about 1148.7855143355.

Adding to 1516061615 its reverse (5161606151), we get a palindrome (6677667766).

The spelling of 1516061615 in words is "one billion, five hundred sixteen million, sixty-one thousand, six hundred fifteen".