3208220957 has 2 divisors, whose sum is σ = 3208220958. Its totient is φ = 3208220956.

The previous prime is 3208220923. The next prime is 3208221001. The reversal of 3208220957 is 7590228023.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2159367961 + 1048852996 = 46469^2 + 32386^2 .

It is a cyclic number.

It is not a de Polignac number, because 3208220957 - 2¹⁸ = 3207958813 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3208220957.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3208220657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1604110478 + 1604110479.

It is an arithmetic number, because the mean of its divisors is an integer number (1604110479).

Almost surely, 2^3208220957 is an apocalyptic number.

It is an amenable number.

3208220957 is a deficient number, since it is larger than the sum of its proper divisors (1).

3208220957 is an equidigital number, since it uses as much as digits as its factorization.

3208220957 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 3208220957 is about 56641.1595661671. The cubic root of 3208220957 is about 1474.8734480335.

The spelling of 3208220957 in words is "three billion, two hundred eight million, two hundred twenty thousand, nine hundred fifty-seven".