493157569 has 2 divisors, whose sum is σ = 493157570. Its totient is φ = 493157568.

The previous prime is 493157549. The next prime is 493157593. The reversal of 493157569 is 965751394.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 406425600 + 86731969 = 20160^2 + 9313^2 .

It is a cyclic number.

It is not a de Polignac number, because 493157569 - 2⁵ = 493157537 is a prime.

It is a super-2 number, since 2×493157569² = 486408775723979522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (493157519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 246578784 + 246578785.

It is an arithmetic number, because the mean of its divisors is an integer number (246578785).

Almost surely, 2^493157569 is an apocalyptic number.

It is an amenable number.

493157569 is a deficient number, since it is larger than the sum of its proper divisors (1).

493157569 is an equidigital number, since it uses as much as digits as its factorization.

493157569 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1020600, while the sum is 49.

The square root of 493157569 is about 22207.1513031276. The cubic root of 493157569 is about 790.0633229165.

It can be divided in two parts, 4931 and 57569, that added together give a square (62500 = 250²).

The spelling of 493157569 in words is "four hundred ninety-three million, one hundred fifty-seven thousand, five hundred sixty-nine".