132643813 has 2 divisors, whose sum is σ = 132643814. Its totient is φ = 132643812.

The previous prime is 132643799. The next prime is 132643867. The reversal of 132643813 is 318346231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 88792929 + 43850884 = 9423^2 + 6622^2 .

It is a cyclic number.

It is not a de Polignac number, because 132643813 - 2⁵ = 132643781 is a prime.

It is a super-2 number, since 2×132643813² = 35188762254357938, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (132643613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66321906 + 66321907.

It is an arithmetic number, because the mean of its divisors is an integer number (66321907).

Almost surely, 2^132643813 is an apocalyptic number.

It is an amenable number.

132643813 is a deficient number, since it is larger than the sum of its proper divisors (1).

132643813 is an equidigital number, since it uses as much as digits as its factorization.

132643813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10368, while the sum is 31.

The square root of 132643813 is about 11517.1095766256. The cubic root of 132643813 is about 509.9907892736.

The spelling of 132643813 in words is "one hundred thirty-two million, six hundred forty-three thousand, eight hundred thirteen".