3291057487813 has 2 divisors, whose sum is σ = 3291057487814. Its totient is φ = 3291057487812.

The previous prime is 3291057487807. The next prime is 3291057487877. The reversal of 3291057487813 is 3187847501923.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2602743343204 + 688314144609 = 1613302^2 + 829647^2 .

It is a cyclic number.

It is not a de Polignac number, because 3291057487813 - 2²⁵ = 3291023933381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3291057187813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1645528743906 + 1645528743907.

It is an arithmetic number, because the mean of its divisors is an integer number (1645528743907).

Almost surely, 2^{3291057487813} is an apocalyptic number.

It is an amenable number.

3291057487813 is a deficient number, since it is larger than the sum of its proper divisors (1).

3291057487813 is an equidigital number, since it uses as much as digits as its factorization.

3291057487813 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10160640, while the sum is 58.

The spelling of 3291057487813 in words is "three trillion, two hundred ninety-one billion, fifty-seven million, four hundred eighty-seven thousand, eight hundred thirteen".