1117974815 has 4 divisors (see below), whose sum is σ = 1341569784. Its totient is φ = 894379848.

The previous prime is 1117974787. The next prime is 1117974817. The reversal of 1117974815 is 5184797111.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1117974815 - 2¹² = 1117970719 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1117974817) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111797477 + ... + 111797486.

It is an arithmetic number, because the mean of its divisors is an integer number (335392446).

Almost surely, 2^1117974815 is an apocalyptic number.

1117974815 is a deficient number, since it is larger than the sum of its proper divisors (223594969).

1117974815 is an equidigital number, since it uses as much as digits as its factorization.

1117974815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223594968.

The product of its digits is 70560, while the sum is 44.

The square root of 1117974815 is about 33436.1303831649. The cubic root of 1117974815 is about 1037.8725045520.

The spelling of 1117974815 in words is "one billion, one hundred seventeen million, nine hundred seventy-four thousand, eight hundred fifteen".