493215457849 has 27 divisors (see below), whose sum is σ = 520631958951. Its totient is φ = 467221487040.

The previous prime is 493215457831. The next prime is 493215457853. The reversal of 493215457849 is 948754512394.

The square root of 493215457849 is 702293.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 13 ways, for example, as 425580093225 + 67635364624 = 652365^2 + 260068^2 .

It is not a de Polignac number, because 493215457849 - 2²⁷ = 493081240121 is a prime.

It is a super-2 number, since 2×493215457849² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (61).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (493215457879) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1242356119 + ... + 1242356515.

Almost surely, 2^493215457849 is an apocalyptic number.

493215457849 is the 702293-rd square number.

493215457849 is the 351147-th centered octagonal number.

It is an amenable number.

493215457849 is a deficient number, since it is larger than the sum of its proper divisors (27416501102).

493215457849 is an frugal number, since it uses more digits than its factorization.

493215457849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 974 (or 487 counting only the distinct ones).

The product of its digits is 43545600, while the sum is 61.

The spelling of 493215457849 in words is "four hundred ninety-three billion, two hundred fifteen million, four hundred fifty-seven thousand, eight hundred forty-nine".