1516669515 has 20 divisors (see below), whose sum is σ = 2718771264. Its totient is φ = 808890192.

The previous prime is 1516669489. The next prime is 1516669543. The reversal of 1516669515 is 5159666151.

It is not a de Polignac number, because 1516669515 - 2¹⁹ = 1516145227 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1872027 + ... + 1872836.

Almost surely, 2^1516669515 is an apocalyptic number.

1516669515 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1516669515 is a deficient number, since it is larger than the sum of its proper divisors (1202101749).

1516669515 is an equidigital number, since it uses as much as digits as its factorization.

1516669515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3744880 (or 3744871 counting only the distinct ones).

The product of its digits is 243000, while the sum is 45.

The square root of 1516669515 is about 38944.4413877000. The cubic root of 1516669515 is about 1148.9390378662.

It can be divided in two parts, 15166 and 69515, that added together give a square (84681 = 291²).

The spelling of 1516669515 in words is "one billion, five hundred sixteen million, six hundred sixty-nine thousand, five hundred fifteen".