493042157 has 2 divisors, whose sum is σ = 493042158. Its totient is φ = 493042156.

The previous prime is 493042139. The next prime is 493042181. The reversal of 493042157 is 751240394.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 434764201 + 58277956 = 20851^2 + 7634^2 .

It is a cyclic number.

It is not a de Polignac number, because 493042157 - 2¹⁶ = 492976621 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 (493042117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 246521078 + 246521079.

It is an arithmetic number, because the mean of its divisors is an integer number (246521079).

Almost surely, 2^493042157 is an apocalyptic number.

It is an amenable number.

493042157 is a deficient number, since it is larger than the sum of its proper divisors (1).

493042157 is an equidigital number, since it uses as much as digits as its factorization.

493042157 is an evil number, because the sum of its binary digits is even.

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

The square root of 493042157 is about 22204.5526187762. The cubic root of 493042157 is about 790.0016861578.

The spelling of 493042157 in words is "four hundred ninety-three million, forty-two thousand, one hundred fifty-seven".