613423157 has 2 divisors, whose sum is σ = 613423158. Its totient is φ = 613423156.

The previous prime is 613423103. The next prime is 613423169. The reversal of 613423157 is 751324316.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 605209201 + 8213956 = 24601^2 + 2866^2 .

It is a cyclic number.

It is not a de Polignac number, because 613423157 - 2²⁸ = 344987701 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (613423357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306711578 + 306711579.

It is an arithmetic number, because the mean of its divisors is an integer number (306711579).

Almost surely, 2^613423157 is an apocalyptic number.

It is an amenable number.

613423157 is a deficient number, since it is larger than the sum of its proper divisors (1).

613423157 is an equidigital number, since it uses as much as digits as its factorization.

613423157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15120, while the sum is 32.

The square root of 613423157 is about 24767.3809071529. The cubic root of 613423157 is about 849.6760735717.

The spelling of 613423157 in words is "six hundred thirteen million, four hundred twenty-three thousand, one hundred fifty-seven".