1179157121 has 2 divisors, whose sum is σ = 1179157122. Its totient is φ = 1179157120.

The previous prime is 1179157117. The next prime is 1179157127. The reversal of 1179157121 is 1217519711.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1061130625 + 118026496 = 32575^2 + 10864^2 .

It is a cyclic number.

It is not a de Polignac number, because 1179157121 - 2² = 1179157117 is a prime.

It is not a weakly prime, because it can be changed into another prime (1179157127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 589578560 + 589578561.

It is an arithmetic number, because the mean of its divisors is an integer number (589578561).

Almost surely, 2^1179157121 is an apocalyptic number.

It is an amenable number.

1179157121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1179157121 is an equidigital number, since it uses as much as digits as its factorization.

1179157121 is an odious number, because the sum of its binary digits is odd.

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

The square root of 1179157121 is about 34338.8573048085. The cubic root of 1179157121 is about 1056.4701383726.

The spelling of 1179157121 in words is "one billion, one hundred seventy-nine million, one hundred fifty-seven thousand, one hundred twenty-one".