3945969141982 has 32 divisors (see below), whose sum is σ = 6794961177600. Its totient is φ = 1683523429728.

The previous prime is 3945969141973. The next prime is 3945969142033. The reversal of 3945969141982 is 2891419695493.

It is a happy number.

It is a super-2 number, since 2×3945969141982² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10533144 + ... + 10901332.

It is an arithmetic number, because the mean of its divisors is an integer number (212342536800).

Almost surely, 2^{3945969141982} is an apocalyptic number.

3945969141982 is a deficient number, since it is larger than the sum of its proper divisors (2848992035618).

3945969141982 is a wasteful number, since it uses less digits than its factorization.

3945969141982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371640.

The product of its digits is 151165440, while the sum is 70.

The spelling of 3945969141982 in words is "three trillion, nine hundred forty-five billion, nine hundred sixty-nine million, one hundred forty-one thousand, nine hundred eighty-two".