157613849 has 2 divisors, whose sum is σ = 157613850. Its totient is φ = 157613848.

The previous prime is 157613843. The next prime is 157613857. The reversal of 157613849 is 948316751.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 144961600 + 12652249 = 12040^2 + 3557^2 .

It is an emirp because it is prime and its reverse (948316751) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 157613849 - 2²⁰ = 156565273 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (157613843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78806924 + 78806925.

It is an arithmetic number, because the mean of its divisors is an integer number (78806925).

Almost surely, 2^157613849 is an apocalyptic number.

It is an amenable number.

157613849 is a deficient number, since it is larger than the sum of its proper divisors (1).

157613849 is an equidigital number, since it uses as much as digits as its factorization.

157613849 is an evil number, because the sum of its binary digits is even.

The product of its digits is 181440, while the sum is 44.

The square root of 157613849 is about 12554.4354313525. The cubic root of 157613849 is about 540.1712408448.

The spelling of 157613849 in words is "one hundred fifty-seven million, six hundred thirteen thousand, eight hundred forty-nine".