157956193 has 2 divisors, whose sum is σ = 157956194. Its totient is φ = 157956192.

The previous prime is 157956181. The next prime is 157956199. The reversal of 157956193 is 391659751.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 133818624 + 24137569 = 11568^2 + 4913^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-157956193 is a prime.

It is not a weakly prime, because it can be changed into another prime (157956199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78978096 + 78978097.

It is an arithmetic number, because the mean of its divisors is an integer number (78978097).

Almost surely, 2^157956193 is an apocalyptic number.

It is an amenable number.

157956193 is a deficient number, since it is larger than the sum of its proper divisors (1).

157956193 is an equidigital number, since it uses as much as digits as its factorization.

157956193 is an evil number, because the sum of its binary digits is even.

The product of its digits is 255150, while the sum is 46.

The square root of 157956193 is about 12568.0624202778. The cubic root of 157956193 is about 540.5620496853.

The spelling of 157956193 in words is "one hundred fifty-seven million, nine hundred fifty-six thousand, one hundred ninety-three".