1516385689 has 16 divisors (see below), whose sum is σ = 1916766208. Its totient is φ = 1167348672.

The previous prime is 1516385617. The next prime is 1516385701. The reversal of 1516385689 is 9865836151.

It is not a de Polignac number, because 1516385689 - 2⁹ = 1516385177 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1516385389) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 221817 + ... + 228550.

It is an arithmetic number, because the mean of its divisors is an integer number (119797888).

Almost surely, 2^1516385689 is an apocalyptic number.

It is an amenable number.

1516385689 is a deficient number, since it is larger than the sum of its proper divisors (400380519).

1516385689 is a wasteful number, since it uses less digits than its factorization.

1516385689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450424.

The product of its digits is 1555200, while the sum is 52.

The square root of 1516385689 is about 38940.7972311816. The cubic root of 1516385689 is about 1148.8673634699.

The spelling of 1516385689 in words is "one billion, five hundred sixteen million, three hundred eighty-five thousand, six hundred eighty-nine".