1117257493 has 12 divisors (see below), whose sum is σ = 1300301100. Its totient is φ = 955940480.

The previous prime is 1117257469. The next prime is 1117257497. The reversal of 1117257493 is 3947527111.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 681366609 + 435890884 = 26103^2 + 20878^2 .

It is not a de Polignac number, because 1117257493 - 2⁵ = 1117257461 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1117257497) 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, 269518 + ... + 273631.

It is an arithmetic number, because the mean of its divisors is an integer number (108358425).

Almost surely, 2^1117257493 is an apocalyptic number.

It is an amenable number.

1117257493 is a deficient number, since it is larger than the sum of its proper divisors (183043607).

1117257493 is a wasteful number, since it uses less digits than its factorization.

1117257493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 543188 (or 543177 counting only the distinct ones).

The product of its digits is 52920, while the sum is 40.

The square root of 1117257493 is about 33425.4019123181. The cubic root of 1117257493 is about 1037.6504816420.

The spelling of 1117257493 in words is "one billion, one hundred seventeen million, two hundred fifty-seven thousand, four hundred ninety-three".