3264557381 has 2 divisors, whose sum is σ = 3264557382. Its totient is φ = 3264557380.

The previous prime is 3264557297. The next prime is 3264557383. The reversal of 3264557381 is 1837554623.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1851925156 + 1412632225 = 43034^2 + 37585^2 .

It is an emirp because it is prime and its reverse (1837554623) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3264557381 - 2¹⁴ = 3264540997 is a prime.

It is a super-2 number, since 2×3264557381² = 21314669787683158322, which contains 22 as substring.

Together with 3264557383, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3264557383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1632278690 + 1632278691.

It is an arithmetic number, because the mean of its divisors is an integer number (1632278691).

Almost surely, 2^3264557381 is an apocalyptic number.

It is an amenable number.

3264557381 is a deficient number, since it is larger than the sum of its proper divisors (1).

3264557381 is an equidigital number, since it uses as much as digits as its factorization.

3264557381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 604800, while the sum is 44.

The square root of 3264557381 is about 57136.3052795681. The cubic root of 3264557381 is about 1483.4563395139.

The spelling of 3264557381 in words is "three billion, two hundred sixty-four million, five hundred fifty-seven thousand, three hundred eighty-one".