157830157 has 2 divisors, whose sum is σ = 157830158. Its totient is φ = 157830156.

The previous prime is 157830143. The next prime is 157830199. The reversal of 157830157 is 751038751.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 137499076 + 20331081 = 11726^2 + 4509^2 .

It is a cyclic number.

It is not a de Polignac number, because 157830157 - 2¹¹ = 157828109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157840157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78915078 + 78915079.

It is an arithmetic number, because the mean of its divisors is an integer number (78915079).

Almost surely, 2^157830157 is an apocalyptic number.

It is an amenable number.

157830157 is a deficient number, since it is larger than the sum of its proper divisors (1).

157830157 is an equidigital number, since it uses as much as digits as its factorization.

157830157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 29400, while the sum is 37.

The square root of 157830157 is about 12563.0472816113. The cubic root of 157830157 is about 540.4182368006.

The spelling of 157830157 in words is "one hundred fifty-seven million, eight hundred thirty thousand, one hundred fifty-seven".