3981683619617 has 4 divisors (see below), whose sum is σ = 4343654857776. Its totient is φ = 3619712381460.

The previous prime is 3981683619593. The next prime is 3981683619701. The reversal of 3981683619617 is 7169163861893.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3981683619617 - 2²² = 3981679425313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3981683618617) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 180985619063 + ... + 180985619084.

It is an arithmetic number, because the mean of its divisors is an integer number (1085913714444).

Almost surely, 2^{3981683619617} is an apocalyptic number.

It is an amenable number.

3981683619617 is a deficient number, since it is larger than the sum of its proper divisors (361971238159).

3981683619617 is a wasteful number, since it uses less digits than its factorization.

3981683619617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361971238158.

The product of its digits is 70543872, while the sum is 68.

The spelling of 3981683619617 in words is "three trillion, nine hundred eighty-one billion, six hundred eighty-three million, six hundred nineteen thousand, six hundred seventeen".