1332865813 has 2 divisors, whose sum is σ = 1332865814. Its totient is φ = 1332865812.

The previous prime is 1332865777. The next prime is 1332865817. The reversal of 1332865813 is 3185682331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1020035844 + 312829969 = 31938^2 + 17687^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1332865813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1332865817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 666432906 + 666432907.

It is an arithmetic number, because the mean of its divisors is an integer number (666432907).

Almost surely, 2^1332865813 is an apocalyptic number.

It is an amenable number.

1332865813 is a deficient number, since it is larger than the sum of its proper divisors (1).

1332865813 is an equidigital number, since it uses as much as digits as its factorization.

1332865813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 103680, while the sum is 40.

The square root of 1332865813 is about 36508.4348199152. The cubic root of 1332865813 is about 1100.5137580821.

The spelling of 1332865813 in words is "one billion, three hundred thirty-two million, eight hundred sixty-five thousand, eight hundred thirteen".