116815129 has 2 divisors, whose sum is σ = 116815130. Its totient is φ = 116815128.

The previous prime is 116815079. The next prime is 116815151. The reversal of 116815129 is 921518611.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 94536729 + 22278400 = 9723^2 + 4720^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-116815129 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 116815094 and 116815103.

It is not a weakly prime, because it can be changed into another prime (116815159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58407564 + 58407565.

It is an arithmetic number, because the mean of its divisors is an integer number (58407565).

Almost surely, 2^116815129 is an apocalyptic number.

It is an amenable number.

116815129 is a deficient number, since it is larger than the sum of its proper divisors (1).

116815129 is an equidigital number, since it uses as much as digits as its factorization.

116815129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4320, while the sum is 34.

The square root of 116815129 is about 10808.1047829858. The cubic root of 116815129 is about 488.8395822653.

The spelling of 116815129 in words is "one hundred sixteen million, eight hundred fifteen thousand, one hundred twenty-nine".