1516385690 has 16 divisors (see below), whose sum is σ = 2740919040. Its totient is φ = 604015440.

The previous prime is 1516385617. The next prime is 1516385701. The reversal of 1516385690 is 965836151.

It is a super-2 number, since 2×1516385690² = 4598851121673552200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 314846 + ... + 319625.

It is an arithmetic number, because the mean of its divisors is an integer number (171307440).

Almost surely, 2^1516385690 is an apocalyptic number.

1516385690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1516385690 is a deficient number, since it is larger than the sum of its proper divisors (1224533350).

1516385690 is a wasteful number, since it uses less digits than its factorization.

1516385690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 634717.

The product of its (nonzero) digits is 194400, while the sum is 44.

The square root of 1516385690 is about 38940.7972440216. The cubic root of 1516385690 is about 1148.8673637225.

The spelling of 1516385690 in words is "one billion, five hundred sixteen million, three hundred eighty-five thousand, six hundred ninety".