3281615473 has 2 divisors, whose sum is σ = 3281615474. Its totient is φ = 3281615472.

The previous prime is 3281615461. The next prime is 3281615479. The reversal of 3281615473 is 3745161823.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3229876224 + 51739249 = 56832^2 + 7193^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3281615473 is a prime.

It is a super-2 number, since 2×3281615473² = 21538000225266027458, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3281615479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1640807736 + 1640807737.

It is an arithmetic number, because the mean of its divisors is an integer number (1640807737).

Almost surely, 2^3281615473 is an apocalyptic number.

It is an amenable number.

3281615473 is a deficient number, since it is larger than the sum of its proper divisors (1).

3281615473 is an equidigital number, since it uses as much as digits as its factorization.

3281615473 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120960, while the sum is 40.

The square root of 3281615473 is about 57285.3862080025. The cubic root of 3281615473 is about 1486.0356567581.

The spelling of 3281615473 in words is "three billion, two hundred eighty-one million, six hundred fifteen thousand, four hundred seventy-three".