1195815851 has 2 divisors, whose sum is σ = 1195815852. Its totient is φ = 1195815850.

The previous prime is 1195815827. The next prime is 1195815857. The reversal of 1195815851 is 1585185911.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1195815851 - 2²⁶ = 1128706987 is a prime.

It is not a weakly prime, because it can be changed into another prime (1195815857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 597907925 + 597907926.

It is an arithmetic number, because the mean of its divisors is an integer number (597907926).

Almost surely, 2^1195815851 is an apocalyptic number.

1195815851 is a deficient number, since it is larger than the sum of its proper divisors (1).

1195815851 is an equidigital number, since it uses as much as digits as its factorization.

1195815851 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72000, while the sum is 44.

The square root of 1195815851 is about 34580.5704261801. The cubic root of 1195815851 is about 1061.4220415100.

The spelling of 1195815851 in words is "one billion, one hundred ninety-five million, eight hundred fifteen thousand, eight hundred fifty-one".