3613381256 has 8 divisors (see below), whose sum is σ = 6775089870. Its totient is φ = 1806690624.

The previous prime is 3613381249. The next prime is 3613381271. The reversal of 3613381256 is 6521833163.

It can be written as a sum of positive squares in only one way, i.e., 3245125156 + 368256100 = 56966^2 + 19190^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225836321 + ... + 225836336.

Almost surely, 2^3613381256 is an apocalyptic number.

It is an amenable number.

3613381256 is a deficient number, since it is larger than the sum of its proper divisors (3161708614).

3613381256 is a wasteful number, since it uses less digits than its factorization.

3613381256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451672663 (or 451672659 counting only the distinct ones).

The product of its digits is 77760, while the sum is 38.

The square root of 3613381256 is about 60111.4070372671. The cubic root of 3613381256 is about 1534.5154395789.

The spelling of 3613381256 in words is "three billion, six hundred thirteen million, three hundred eighty-one thousand, two hundred fifty-six".