1617275493 has 12 divisors (see below), whose sum is σ = 2374361548. Its totient is φ = 1060508160.

The previous prime is 1617275479. The next prime is 1617275563. The reversal of 1617275493 is 3945727161.

1617275493 is a `hidden beast` number, since 1 + 617 + 27 + 5 + 4 + 9 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 469285569 + 1147989924 = 21663^2 + 33882^2 .

It is not a de Polignac number, because 1617275493 - 2⁵ = 1617275461 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1617275453) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1472380 + ... + 1473477.

Almost surely, 2^1617275493 is an apocalyptic number.

It is an amenable number.

1617275493 is a deficient number, since it is larger than the sum of its proper divisors (757086055).

1617275493 is a wasteful number, since it uses less digits than its factorization.

1617275493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2945924 (or 2945921 counting only the distinct ones).

The product of its digits is 317520, while the sum is 45.

The square root of 1617275493 is about 40215.3638924230. The cubic root of 1617275493 is about 1173.8015226425.

The spelling of 1617275493 in words is "one billion, six hundred seventeen million, two hundred seventy-five thousand, four hundred ninety-three".