1251163232 has 36 divisors (see below), whose sum is σ = 2707523028. Its totient is φ = 568708800.

The previous prime is 1251163231. The next prime is 1251163237. The reversal of 1251163232 is 2323611521.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1251163231) 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 in 5 ways as a sum of consecutive naturals, for example, 157694 + ... + 165437.

It is an arithmetic number, because the mean of its divisors is an integer number (75208973).

Almost surely, 2^1251163232 is an apocalyptic number.

It is an amenable number.

1251163232 is an abundant number, since it is smaller than the sum of its proper divisors (1456359796).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1251163232 is a wasteful number, since it uses less digits than its factorization.

1251163232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323163 (or 323144 counting only the distinct ones).

The product of its digits is 2160, while the sum is 26.

The square root of 1251163232 is about 35371.7858186436. The cubic root of 1251163232 is about 1077.5513890683.

Adding to 1251163232 its reverse (2323611521), we get a palindrome (3574774753).

The spelling of 1251163232 in words is "one billion, two hundred fifty-one million, one hundred sixty-three thousand, two hundred thirty-two".