1163317921 has 8 divisors (see below), whose sum is σ = 1229673600. Its totient is φ = 1097475120.

The previous prime is 1163317901. The next prime is 1163317949. The reversal of 1163317921 is 1297133611.

It is a happy number.

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 1163317921 - 2⁹ = 1163317409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1163317901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123550 + ... + 132631.

It is an arithmetic number, because the mean of its divisors is an integer number (153709200).

Almost surely, 2^1163317921 is an apocalyptic number.

It is an amenable number.

1163317921 is a deficient number, since it is larger than the sum of its proper divisors (66355679).

1163317921 is a wasteful number, since it uses less digits than its factorization.

1163317921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256439.

The product of its digits is 6804, while the sum is 34.

The square root of 1163317921 is about 34107.4467088934. The cubic root of 1163317921 is about 1051.7184018971.

The spelling of 1163317921 in words is "one billion, one hundred sixty-three million, three hundred seventeen thousand, nine hundred twenty-one".