1111959157 has 2 divisors, whose sum is σ = 1111959158. Its totient is φ = 1111959156.

The previous prime is 1111959143. The next prime is 1111959169. The reversal of 1111959157 is 7519591111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1080699876 + 31259281 = 32874^2 + 5591^2 .

It is a cyclic number.

It is not a de Polignac number, because 1111959157 - 2⁷ = 1111959029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1111929157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555979578 + 555979579.

It is an arithmetic number, because the mean of its divisors is an integer number (555979579).

Almost surely, 2^1111959157 is an apocalyptic number.

It is an amenable number.

1111959157 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111959157 is an equidigital number, since it uses as much as digits as its factorization.

1111959157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14175, while the sum is 40.

The square root of 1111959157 is about 33346.0515953538. The cubic root of 1111959157 is about 1036.0076092150.

The spelling of 1111959157 in words is "one billion, one hundred eleven million, nine hundred fifty-nine thousand, one hundred fifty-seven".