3257685493 has 2 divisors, whose sum is σ = 3257685494. Its totient is φ = 3257685492.

The previous prime is 3257685491. The next prime is 3257685551. The reversal of 3257685493 is 3945867523.

3257685493 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2006860804 + 1250824689 = 44798^2 + 35367^2 .

It is a cyclic number.

It is not a de Polignac number, because 3257685493 - 2¹ = 3257685491 is a prime.

It is a super-2 number, since 2×3257685493² = 21225029542605306098, which contains 22 as substring.

Together with 3257685491, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 3257685493.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3257685491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1628842746 + 1628842747.

It is an arithmetic number, because the mean of its divisors is an integer number (1628842747).

Almost surely, 2^3257685493 is an apocalyptic number.

It is an amenable number.

3257685493 is a deficient number, since it is larger than the sum of its proper divisors (1).

3257685493 is an equidigital number, since it uses as much as digits as its factorization.

3257685493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5443200, while the sum is 52.

The square root of 3257685493 is about 57076.1376846752. The cubic root of 3257685493 is about 1482.4147172365.

The spelling of 3257685493 in words is "three billion, two hundred fifty-seven million, six hundred eighty-five thousand, four hundred ninety-three".