3981932391893 has 8 divisors (see below), whose sum is σ = 4209045475200. Its totient is φ = 3756573078048.

The previous prime is 3981932391889. The next prime is 3981932391901.

3981932391893 is nontrivially palindromic in base 10.

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 3981932391893 - 2² = 3981932391889 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3981932391803) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 438437696 + ... + 438446777.

It is an arithmetic number, because the mean of its divisors is an integer number (526130684400).

Almost surely, 2^{3981932391893} is an apocalyptic number.

It is an amenable number.

3981932391893 is a deficient number, since it is larger than the sum of its proper divisors (227113083307).

3981932391893 is a wasteful number, since it uses less digits than its factorization.

3981932391893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 876884731.

The product of its digits is 68024448, while the sum is 68.

The spelling of 3981932391893 in words is "three trillion, nine hundred eighty-one billion, nine hundred thirty-two million, three hundred ninety-one thousand, eight hundred ninety-three".