1516550656 has 20 divisors (see below), whose sum is σ = 3030140322. Its totient is φ = 758275072.

The previous prime is 1516550647. The next prime is 1516550657. The reversal of 1516550656 is 6560556151.

It can be written as a sum of positive squares in only one way, i.e., 862009600 + 654541056 = 29360^2 + 25584^2 .

It is not an unprimeable number, because it can be changed into a prime (1516550657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1480495 + ... + 1481518.

Almost surely, 2^1516550656 is an apocalyptic number.

1516550656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1516550656 is a deficient number, since it is larger than the sum of its proper divisors (1513589666).

1516550656 is an frugal number, since it uses more digits than its factorization.

1516550656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2962031 (or 2962015 counting only the distinct ones).

The product of its (nonzero) digits is 135000, while the sum is 40.

The square root of 1516550656 is about 38942.9153505487. The cubic root of 1516550656 is about 1148.9090235681.

The spelling of 1516550656 in words is "one billion, five hundred sixteen million, five hundred fifty thousand, six hundred fifty-six".