3981809337 has 8 divisors (see below), whose sum is σ = 5791722720. Its totient is φ = 2413217760.

The previous prime is 3981809333. The next prime is 3981809389. The reversal of 3981809337 is 7339081893.

It is a happy number.

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

It is not a de Polignac number, because 3981809337 - 2² = 3981809333 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3981809337.

It is not an unprimeable number, because it can be changed into a prime (3981809333) 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 7 ways as a sum of consecutive naturals, for example, 60330412 + ... + 60330477.

It is an arithmetic number, because the mean of its divisors is an integer number (723965340).

Almost surely, 2^3981809337 is an apocalyptic number.

It is an amenable number.

3981809337 is a deficient number, since it is larger than the sum of its proper divisors (1809913383).

3981809337 is a wasteful number, since it uses less digits than its factorization.

3981809337 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120660903.

The product of its (nonzero) digits is 979776, while the sum is 51.

The square root of 3981809337 is about 63101.5795127190. The cubic root of 3981809337 is about 1584.9910718747.

It can be divided in two parts, 3981 and 809337, that added together give a palindrome (813318).

The spelling of 3981809337 in words is "three billion, nine hundred eighty-one million, eight hundred nine thousand, three hundred thirty-seven".