1195959157 has 2 divisors, whose sum is σ = 1195959158. Its totient is φ = 1195959156.

The previous prime is 1195959143. The next prime is 1195959169. The reversal of 1195959157 is 7519595911.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1029703921 + 166255236 = 32089^2 + 12894^2 .

It is an emirp because it is prime and its reverse (7519595911) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1195959157 - 2¹⁹ = 1195434869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1195959187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 597979578 + 597979579.

It is an arithmetic number, because the mean of its divisors is an integer number (597979579).

Almost surely, 2^1195959157 is an apocalyptic number.

It is an amenable number.

1195959157 is a deficient number, since it is larger than the sum of its proper divisors (1).

1195959157 is an equidigital number, since it uses as much as digits as its factorization.

1195959157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 637875, while the sum is 52.

The square root of 1195959157 is about 34582.6424236206. The cubic root of 1195959157 is about 1061.4644399197.

The spelling of 1195959157 in words is "one billion, one hundred ninety-five million, nine hundred fifty-nine thousand, one hundred fifty-seven".