1617600913 has 2 divisors, whose sum is σ = 1617600914. Its totient is φ = 1617600912.

The previous prime is 1617600877. The next prime is 1617600923. The reversal of 1617600913 is 3190067161.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1045099584 + 572501329 = 32328^2 + 23927^2 .

It is an emirp because it is prime and its reverse (3190067161) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1617600913 - 2⁹ = 1617600401 is a prime.

It is not a weakly prime, because it can be changed into another prime (1617600923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 808800456 + 808800457.

It is an arithmetic number, because the mean of its divisors is an integer number (808800457).

Almost surely, 2^1617600913 is an apocalyptic number.

It is an amenable number.

1617600913 is a deficient number, since it is larger than the sum of its proper divisors (1).

1617600913 is an equidigital number, since it uses as much as digits as its factorization.

1617600913 is an evil number, because the sum of its binary digits is even.

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

The square root of 1617600913 is about 40219.4096550409. The cubic root of 1617600913 is about 1173.8802461657.

The spelling of 1617600913 in words is "one billion, six hundred seventeen million, six hundred thousand, nine hundred thirteen".