1516645163 has 4 divisors (see below), whose sum is σ = 1654522008. Its totient is φ = 1378768320.

The previous prime is 1516645159. The next prime is 1516645171. The reversal of 1516645163 is 3615466151.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1516645163 - 2² = 1516645159 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1516645183) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68938406 + ... + 68938427.

It is an arithmetic number, because the mean of its divisors is an integer number (413630502).

Almost surely, 2^1516645163 is an apocalyptic number.

1516645163 is a deficient number, since it is larger than the sum of its proper divisors (137876845).

1516645163 is a wasteful number, since it uses less digits than its factorization.

1516645163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137876844.

The product of its digits is 64800, while the sum is 38.

The square root of 1516645163 is about 38944.1287359212. The cubic root of 1516645163 is about 1148.9328886221.

The spelling of 1516645163 in words is "one billion, five hundred sixteen million, six hundred forty-five thousand, one hundred sixty-three".