1168130921 has 2 divisors, whose sum is σ = 1168130922. Its totient is φ = 1168130920.

The previous prime is 1168130891. The next prime is 1168130927. The reversal of 1168130921 is 1290318611.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 981944896 + 186186025 = 31336^2 + 13645^2 .

It is a cyclic number.

It is not a de Polignac number, because 1168130921 - 2²⁶ = 1101022057 is a prime.

It is not a weakly prime, because it can be changed into another prime (1168130927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 584065460 + 584065461.

It is an arithmetic number, because the mean of its divisors is an integer number (584065461).

Almost surely, 2^1168130921 is an apocalyptic number.

It is an amenable number.

1168130921 is a deficient number, since it is larger than the sum of its proper divisors (1).

1168130921 is an equidigital number, since it uses as much as digits as its factorization.

1168130921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 32.

The square root of 1168130921 is about 34177.9303206031. The cubic root of 1168130921 is about 1053.1668324814.

The spelling of 1168130921 in words is "one billion, one hundred sixty-eight million, one hundred thirty thousand, nine hundred twenty-one".