3251816641 has 8 divisors (see below), whose sum is σ = 3438586368. Its totient is φ = 3070164000.

The previous prime is 3251816629. The next prime is 3251816653. The reversal of 3251816641 is 1466181523.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (3251816629) and next prime (3251816653).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3251816641 - 2²⁹ = 2714945729 is a prime.

It is a super-2 number, since 2×3251816641² = 21148622933369045762, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3251816641.

It is not an unprimeable number, because it can be changed into a prime (3251816671) 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 in 7 ways as a sum of consecutive naturals, for example, 1277965 + ... + 1280506.

It is an arithmetic number, because the mean of its divisors is an integer number (429823296).

Almost surely, 2^3251816641 is an apocalyptic number.

3251816641 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

3251816641 is a deficient number, since it is larger than the sum of its proper divisors (186769727).

3251816641 is a wasteful number, since it uses less digits than its factorization.

3251816641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2558543.

The product of its digits is 34560, while the sum is 37.

The square root of 3251816641 is about 57024.7020246489. The cubic root of 3251816641 is about 1481.5239721208.

The spelling of 3251816641 in words is "three billion, two hundred fifty-one million, eight hundred sixteen thousand, six hundred forty-one".