1616137616 has 10 divisors (see below), whose sum is σ = 3131266662. Its totient is φ = 808068800.

The previous prime is 1616137613. The next prime is 1616137687. The reversal of 1616137616 is 6167316161.

It can be written as a sum of positive squares in only one way, i.e., 935136400 + 681001216 = 30580^2 + 26096^2 .

It is a super-2 number, since 2×1616137616² = 5223801587700326912, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1616137616.

It is not an unprimeable number, because it can be changed into a prime (1616137613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50504285 + ... + 50504316.

Almost surely, 2^1616137616 is an apocalyptic number.

1616137616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1616137616 is a deficient number, since it is larger than the sum of its proper divisors (1515129046).

1616137616 is a wasteful number, since it uses less digits than its factorization.

1616137616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101008609 (or 101008603 counting only the distinct ones).

The product of its digits is 27216, while the sum is 38.

The square root of 1616137616 is about 40201.2141110191. The cubic root of 1616137616 is about 1173.5261716740.

The spelling of 1616137616 in words is "one billion, six hundred sixteen million, one hundred thirty-seven thousand, six hundred sixteen".