1616137613 has 2 divisors, whose sum is σ = 1616137614. Its totient is φ = 1616137612.

The previous prime is 1616137609. The next prime is 1616137687. The reversal of 1616137613 is 3167316161.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 924342409 + 691795204 = 30403^2 + 26302^2 .

It is a cyclic number.

It is not a de Polignac number, because 1616137613 - 2² = 1616137609 is a prime.

It is a super-2 number, since 2×1616137613² = 5223801568306675538, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1616137603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 808068806 + 808068807.

It is an arithmetic number, because the mean of its divisors is an integer number (808068807).

Almost surely, 2^1616137613 is an apocalyptic number.

It is an amenable number.

1616137613 is a deficient number, since it is larger than the sum of its proper divisors (1).

1616137613 is an equidigital number, since it uses as much as digits as its factorization.

1616137613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13608, while the sum is 35.

The square root of 1616137613 is about 40201.2140737068. The cubic root of 1616137613 is about 1173.5261709479.

The spelling of 1616137613 in words is "one billion, six hundred sixteen million, one hundred thirty-seven thousand, six hundred thirteen".