3258390681 has 72 divisors (see below), whose sum is σ = 6055884744. Its totient is φ = 1672151040.

The previous prime is 3258390631. The next prime is 3258390689. The reversal of 3258390681 is 1860938523.

It is a happy number.

3258390681 is a `hidden beast` number, since 3 + 2 + 583 + 9 + 0 + 68 + 1 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 933608025 + 2324782656 = 30555^2 + 48216^2 .

It is not a de Polignac number, because 3258390681 - 2⁹ = 3258390169 is a prime.

It is a super-2 number, since 2×3258390681² = 21234219660055287522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3258390689) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 204441 + ... + 219801.

Almost surely, 2^3258390681 is an apocalyptic number.

It is an amenable number.

3258390681 is a deficient number, since it is larger than the sum of its proper divisors (2797494063).

3258390681 is a wasteful number, since it uses less digits than its factorization.

3258390681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15431 (or 15421 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The square root of 3258390681 is about 57082.3149583126. The cubic root of 3258390681 is about 1482.5216751417.

The spelling of 3258390681 in words is "three billion, two hundred fifty-eight million, three hundred ninety thousand, six hundred eighty-one".