1609258613 has 2 divisors, whose sum is σ = 1609258614. Its totient is φ = 1609258612.

The previous prime is 1609258591. The next prime is 1609258621. The reversal of 1609258613 is 3168529061.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1187284849 + 421973764 = 34457^2 + 20542^2 .

It is an emirp because it is prime and its reverse (3168529061) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1609258613 - 2¹⁸ = 1608996469 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1609258643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 804629306 + 804629307.

It is an arithmetic number, because the mean of its divisors is an integer number (804629307).

Almost surely, 2^1609258613 is an apocalyptic number.

It is an amenable number.

1609258613 is a deficient number, since it is larger than the sum of its proper divisors (1).

1609258613 is an equidigital number, since it uses as much as digits as its factorization.

1609258613 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 77760, while the sum is 41.

The square root of 1609258613 is about 40115.5657195558. The cubic root of 1609258613 is about 1171.8587866704.

The spelling of 1609258613 in words is "one billion, six hundred nine million, two hundred fifty-eight thousand, six hundred thirteen".