157195013 has 2 divisors, whose sum is σ = 157195014. Its totient is φ = 157195012.

The previous prime is 157195001. The next prime is 157195067. The reversal of 157195013 is 310591751.

It is a happy number.

157195013 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., 146845924 + 10349089 = 12118^2 + 3217^2 .

It is a cyclic number.

It is not a de Polignac number, because 157195013 - 2¹⁰ = 157193989 is a prime.

It is a super-2 number, since 2×157195013² = 49420544224140338, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157195813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78597506 + 78597507.

It is an arithmetic number, because the mean of its divisors is an integer number (78597507).

Almost surely, 2^157195013 is an apocalyptic number.

It is an amenable number.

157195013 is a deficient number, since it is larger than the sum of its proper divisors (1).

157195013 is an equidigital number, since it uses as much as digits as its factorization.

157195013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4725, while the sum is 32.

The square root of 157195013 is about 12537.7435370165. The cubic root of 157195013 is about 539.6923407514.

The spelling of 157195013 in words is "one hundred fifty-seven million, one hundred ninety-five thousand, thirteen".