1117511945 has 8 divisors (see below), whose sum is σ = 1462924800. Its totient is φ = 812735920.

The previous prime is 1117511933. The next prime is 1117511951. The reversal of 1117511945 is 5491157111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1117511945 - 2²⁸ = 849076489 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10159145 + ... + 10159254.

It is an arithmetic number, because the mean of its divisors is an integer number (182865600).

Almost surely, 2^1117511945 is an apocalyptic number.

It is an amenable number.

1117511945 is a deficient number, since it is larger than the sum of its proper divisors (345412855).

1117511945 is a wasteful number, since it uses less digits than its factorization.

1117511945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20318415.

The product of its digits is 6300, while the sum is 35.

The square root of 1117511945 is about 33429.2079624989. The cubic root of 1117511945 is about 1037.7292495776.

The spelling of 1117511945 in words is "one billion, one hundred seventeen million, five hundred eleven thousand, nine hundred forty-five".