3972732613 has 2 divisors, whose sum is σ = 3972732614. Its totient is φ = 3972732612.

The previous prime is 3972732563. The next prime is 3972732637. The reversal of 3972732613 is 3162372793.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2099747329 + 1872985284 = 45823^2 + 43278^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3972732613 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3972732613.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3972732653) 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, 1986366306 + 1986366307.

It is an arithmetic number, because the mean of its divisors is an integer number (1986366307).

Almost surely, 2^3972732613 is an apocalyptic number.

It is an amenable number.

3972732613 is a deficient number, since it is larger than the sum of its proper divisors (1).

3972732613 is an equidigital number, since it uses as much as digits as its factorization.

3972732613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 285768, while the sum is 43.

The square root of 3972732613 is about 63029.6169510810. The cubic root of 3972732613 is about 1583.7858013775.

The spelling of 3972732613 in words is "three billion, nine hundred seventy-two million, seven hundred thirty-two thousand, six hundred thirteen".