3218881801 has 4 divisors (see below), whose sum is σ = 3220812100. Its totient is φ = 3216951504.

The previous prime is 3218881723. The next prime is 3218881819. The reversal of 3218881801 is 1081888123.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2611210000 + 607671801 = 51100^2 + 24651^2 .

It is a cyclic number.

It is not a de Polignac number, because 3218881801 - 2²³ = 3210493193 is a prime.

It is a super-2 number, since 2×3218881801² = 20722400097618007202, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3218881301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 962646 + ... + 965983.

It is an arithmetic number, because the mean of its divisors is an integer number (805203025).

Almost surely, 2^3218881801 is an apocalyptic number.

It is an amenable number.

3218881801 is a deficient number, since it is larger than the sum of its proper divisors (1930299).

3218881801 is a wasteful number, since it uses less digits than its factorization.

3218881801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1930298.

The product of its (nonzero) digits is 24576, while the sum is 40.

The square root of 3218881801 is about 56735.1901468568. The cubic root of 3218881801 is about 1476.5052986116.

The spelling of 3218881801 in words is "three billion, two hundred eighteen million, eight hundred eighty-one thousand, eight hundred one".