1117921751 has 8 divisors (see below), whose sum is σ = 1184667120. Its totient is φ = 1051285888.

The previous prime is 1117921741. The next prime is 1117921757. The reversal of 1117921751 is 1571297111.

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

It is a cyclic number.

It is not a de Polignac number, because 1117921751 - 2⁶ = 1117921687 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 (1117921757) by changing a digit.

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, 5861 + ... + 47646.

It is an arithmetic number, because the mean of its divisors is an integer number (148083390).

Almost surely, 2^1117921751 is an apocalyptic number.

1117921751 is a deficient number, since it is larger than the sum of its proper divisors (66745369).

1117921751 is a wasteful number, since it uses less digits than its factorization.

1117921751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54753.

The product of its digits is 4410, while the sum is 35.

The square root of 1117921751 is about 33435.3368608722. The cubic root of 1117921751 is about 1037.8560836282.

The spelling of 1117921751 in words is "one billion, one hundred seventeen million, nine hundred twenty-one thousand, seven hundred fifty-one".