3957992185897 has 8 divisors (see below), whose sum is σ = 4196092850432. Its totient is φ = 3726792990000.

The previous prime is 3957992185859. The next prime is 3957992185907. The reversal of 3957992185897 is 7985812997593.

3957992185897 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3957992185897 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3957992185897.

It is not an unprimeable number, because it can be changed into a prime (3957992185397) 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, 1725365979 + ... + 1725368272.

It is an arithmetic number, because the mean of its divisors is an integer number (524511606304).

Almost surely, 2^{3957992185897} is an apocalyptic number.

3957992185897 is a gapful number since it is divisible by the number (37) formed by its first and last digit.

It is an amenable number.

3957992185897 is a deficient number, since it is larger than the sum of its proper divisors (238100664535).

3957992185897 is a wasteful number, since it uses less digits than its factorization.

3957992185897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3450734319.

The product of its digits is 3086294400, while the sum is 82.

The spelling of 3957992185897 in words is "three trillion, nine hundred fifty-seven billion, nine hundred ninety-two million, one hundred eighty-five thousand, eight hundred ninety-seven".