1232159857 has 2 divisors, whose sum is σ = 1232159858. Its totient is φ = 1232159856.

The previous prime is 1232159833. The next prime is 1232159893. The reversal of 1232159857 is 7589512321.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1122518016 + 109641841 = 33504^2 + 10471^2 .

It is a cyclic number.

It is not a de Polignac number, because 1232159857 - 2⁷ = 1232159729 is a prime.

It is not a weakly prime, because it can be changed into another prime (1232259857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 616079928 + 616079929.

It is an arithmetic number, because the mean of its divisors is an integer number (616079929).

Almost surely, 2^1232159857 is an apocalyptic number.

It is an amenable number.

1232159857 is a deficient number, since it is larger than the sum of its proper divisors (1).

1232159857 is an equidigital number, since it uses as much as digits as its factorization.

1232159857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 151200, while the sum is 43.

The square root of 1232159857 is about 35102.1346501890. The cubic root of 1232159857 is about 1072.0680465758.

The spelling of 1232159857 in words is "one billion, two hundred thirty-two million, one hundred fifty-nine thousand, eight hundred fifty-seven".