1617609013 has 2 divisors, whose sum is σ = 1617609014. Its totient is φ = 1617609012.

The previous prime is 1617609001. The next prime is 1617609053. The reversal of 1617609013 is 3109067161.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 910953124 + 706655889 = 30182^2 + 26583^2 .

It is a cyclic number.

It is not a de Polignac number, because 1617609013 - 2¹⁷ = 1617477941 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1617609013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1617609053) 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, 808804506 + 808804507.

It is an arithmetic number, because the mean of its divisors is an integer number (808804507).

Almost surely, 2^1617609013 is an apocalyptic number.

It is an amenable number.

1617609013 is a deficient number, since it is larger than the sum of its proper divisors (1).

1617609013 is an equidigital number, since it uses as much as digits as its factorization.

1617609013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6804, while the sum is 34.

The square root of 1617609013 is about 40219.5103525640. The cubic root of 1617609013 is about 1173.8822055312.

The spelling of 1617609013 in words is "one billion, six hundred seventeen million, six hundred nine thousand, thirteen".