1613569253 has 2 divisors, whose sum is σ = 1613569254. Its totient is φ = 1613569252.

The previous prime is 1613569231. The next prime is 1613569271. The reversal of 1613569253 is 3529653161.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1235733409 + 377835844 = 35153^2 + 19438^2 .

It is a cyclic number.

It is not a de Polignac number, because 1613569253 - 2¹⁸ = 1613307109 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1613569253.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1613569273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 806784626 + 806784627.

It is an arithmetic number, because the mean of its divisors is an integer number (806784627).

Almost surely, 2^1613569253 is an apocalyptic number.

It is an amenable number.

1613569253 is a deficient number, since it is larger than the sum of its proper divisors (1).

1613569253 is an equidigital number, since it uses as much as digits as its factorization.

1613569253 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145800, while the sum is 41.

The square root of 1613569253 is about 40169.2575609757. The cubic root of 1613569253 is about 1172.9041868429.

The spelling of 1613569253 in words is "one billion, six hundred thirteen million, five hundred sixty-nine thousand, two hundred fifty-three".