1160921921 has 2 divisors, whose sum is σ = 1160921922. Its totient is φ = 1160921920.

The previous prime is 1160921917. The next prime is 1160921947. The reversal of 1160921921 is 1291290611.

1160921921 is nontrivially palindromic in base 8.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1078202896 + 82719025 = 32836^2 + 9095^2 .

It is a cyclic number.

It is not a de Polignac number, because 1160921921 - 2² = 1160921917 is a prime.

It is not a weakly prime, because it can be changed into another prime (1160921981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 580460960 + 580460961.

It is an arithmetic number, because the mean of its divisors is an integer number (580460961).

Almost surely, 2^1160921921 is an apocalyptic number.

It is an amenable number.

1160921921 is a deficient number, since it is larger than the sum of its proper divisors (1).

1160921921 is an equidigital number, since it uses as much as digits as its factorization.

1160921921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 32.

The square root of 1160921921 is about 34072.3043100991. The cubic root of 1160921921 is about 1050.9958567078.

The spelling of 1160921921 in words is "one billion, one hundred sixty million, nine hundred twenty-one thousand, nine hundred twenty-one".