161652613 has 2 divisors, whose sum is σ = 161652614. Its totient is φ = 161652612.

The previous prime is 161652611. The next prime is 161652619. The reversal of 161652613 is 316256161.

161652613 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 87572164 + 74080449 = 9358^2 + 8607^2 .

It is a cyclic number.

It is not a de Polignac number, because 161652613 - 2¹ = 161652611 is a prime.

It is a super-2 number, since 2×161652613² = 52263134579455538, which contains 22 as substring.

Together with 161652611, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161652611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80826306 + 80826307.

It is an arithmetic number, because the mean of its divisors is an integer number (80826307).

Almost surely, 2^161652613 is an apocalyptic number.

It is an amenable number.

161652613 is a deficient number, since it is larger than the sum of its proper divisors (1).

161652613 is an equidigital number, since it uses as much as digits as its factorization.

161652613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6480, while the sum is 31.

The square root of 161652613 is about 12714.2680874677. The cubic root of 161652613 is about 544.7462421611.

The spelling of 161652613 in words is "one hundred sixty-one million, six hundred fifty-two thousand, six hundred thirteen".