1196261557 has 2 divisors, whose sum is σ = 1196261558. Its totient is φ = 1196261556.

The previous prime is 1196261543. The next prime is 1196261567. The reversal of 1196261557 is 7551626911.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1148803236 + 47458321 = 33894^2 + 6889^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1196261557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1196261567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 598130778 + 598130779.

It is an arithmetic number, because the mean of its divisors is an integer number (598130779).

Almost surely, 2^1196261557 is an apocalyptic number.

It is an amenable number.

1196261557 is a deficient number, since it is larger than the sum of its proper divisors (1).

1196261557 is an equidigital number, since it uses as much as digits as its factorization.

1196261557 is an evil number, because the sum of its binary digits is even.

The product of its digits is 113400, while the sum is 43.

The square root of 1196261557 is about 34587.0142828201. The cubic root of 1196261557 is about 1061.5538966526.

The spelling of 1196261557 in words is "one billion, one hundred ninety-six million, two hundred sixty-one thousand, five hundred fifty-seven".