494026157 has 2 divisors, whose sum is σ = 494026158. Its totient is φ = 494026156.

The previous prime is 494026147. The next prime is 494026187. The reversal of 494026157 is 751620494.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 492351721 + 1674436 = 22189^2 + 1294^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-494026157 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 494026157.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (494026147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247013078 + 247013079.

It is an arithmetic number, because the mean of its divisors is an integer number (247013079).

Almost surely, 2^494026157 is an apocalyptic number.

It is an amenable number.

494026157 is a deficient number, since it is larger than the sum of its proper divisors (1).

494026157 is an equidigital number, since it uses as much as digits as its factorization.

494026157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 494026157 is about 22226.6991926377. The cubic root of 494026157 is about 790.5268914742.

The spelling of 494026157 in words is "four hundred ninety-four million, twenty-six thousand, one hundred fifty-seven".