493240157 has 2 divisors, whose sum is σ = 493240158. Its totient is φ = 493240156.

The previous prime is 493240109. The next prime is 493240169. The reversal of 493240157 is 751042394.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 324396121 + 168844036 = 18011^2 + 12994^2 .

It is a cyclic number.

It is not a de Polignac number, because 493240157 - 2²⁴ = 476462941 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 (493240757) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 246620078 + 246620079.

It is an arithmetic number, because the mean of its divisors is an integer number (246620079).

Almost surely, 2^493240157 is an apocalyptic number.

It is an amenable number.

493240157 is a deficient number, since it is larger than the sum of its proper divisors (1).

493240157 is an equidigital number, since it uses as much as digits as its factorization.

493240157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 493240157 is about 22209.0107163737. The cubic root of 493240157 is about 790.1074238366.

The spelling of 493240157 in words is "four hundred ninety-three million, two hundred forty thousand, one hundred fifty-seven".