1616165015 has 16 divisors (see below), whose sum is σ = 1984241280. Its totient is φ = 1263375360.

The previous prime is 1616165009. The next prime is 1616165017. The reversal of 1616165015 is 5105616161.

It is not a de Polignac number, because 1616165015 - 2⁴ = 1616164999 is a prime.

It is a super-2 number, since 2×1616165015² = 5223978711419900450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1616165017) 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, 17225 + ... + 59405.

It is an arithmetic number, because the mean of its divisors is an integer number (124015080).

Almost surely, 2^1616165015 is an apocalyptic number.

1616165015 is a deficient number, since it is larger than the sum of its proper divisors (368076265).

1616165015 is an equidigital number, since it uses as much as digits as its factorization.

1616165015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42362.

The product of its (nonzero) digits is 5400, while the sum is 32.

The square root of 1616165015 is about 40201.5548828649. The cubic root of 1616165015 is about 1173.5328033828.

The spelling of 1616165015 in words is "one billion, six hundred sixteen million, one hundred sixty-five thousand, fifteen".