3261974389 has 2 divisors, whose sum is σ = 3261974390. Its totient is φ = 3261974388.

The previous prime is 3261974381. The next prime is 3261974393. The reversal of 3261974389 is 9834791623.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3256414225 + 5560164 = 57065^2 + 2358^2 .

It is a cyclic number.

It is not a de Polignac number, because 3261974389 - 2³ = 3261974381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3261974381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1630987194 + 1630987195.

It is an arithmetic number, because the mean of its divisors is an integer number (1630987195).

Almost surely, 2^3261974389 is an apocalyptic number.

It is an amenable number.

3261974389 is a deficient number, since it is larger than the sum of its proper divisors (1).

3261974389 is an equidigital number, since it uses as much as digits as its factorization.

3261974389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1959552, while the sum is 52.

The square root of 3261974389 is about 57113.6970349495. The cubic root of 3261974389 is about 1483.0649881560.

The spelling of 3261974389 in words is "three billion, two hundred sixty-one million, nine hundred seventy-four thousand, three hundred eighty-nine".