1117957638 has 48 divisors (see below), whose sum is σ = 2753972784. Its totient is φ = 300625920.

The previous prime is 1117957637. The next prime is 1117957667. The reversal of 1117957638 is 8367597111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1117957637) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 106843 + ... + 116838.

It is an arithmetic number, because the mean of its divisors is an integer number (57374433).

Almost surely, 2^1117957638 is an apocalyptic number.

1117957638 is an abundant number, since it is smaller than the sum of its proper divisors (1636015146).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1117957638 is a wasteful number, since it uses less digits than its factorization.

1117957638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223717 (or 223710 counting only the distinct ones).

The product of its digits is 317520, while the sum is 48.

The square root of 1117957638 is about 33435.8735193205. The cubic root of 1117957638 is about 1037.8671890992.

The spelling of 1117957638 in words is "one billion, one hundred seventeen million, nine hundred fifty-seven thousand, six hundred thirty-eight".