3893645156979 has 16 divisors (see below), whose sum is σ = 5210172676224. Its totient is φ = 2586441144000.

The previous prime is 3893645156977. The next prime is 3893645156981. The reversal of 3893645156979 is 9796515463983.

3893645156979 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (3893645156977) and next prime (3893645156981).

It is not a de Polignac number, because 3893645156979 - 2¹ = 3893645156977 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3893645156979.

It is not an unprimeable number, because it can be changed into a prime (3893645156971) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35731792 + ... + 35840594.

It is an arithmetic number, because the mean of its divisors is an integer number (325635792264).

Almost surely, 2^{3893645156979} is an apocalyptic number.

3893645156979 is a deficient number, since it is larger than the sum of its proper divisors (1316527519245).

3893645156979 is a wasteful number, since it uses less digits than its factorization.

3893645156979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151538.

The product of its digits is 1322697600, while the sum is 75.

The spelling of 3893645156979 in words is "three trillion, eight hundred ninety-three billion, six hundred forty-five million, one hundred fifty-six thousand, nine hundred seventy-nine".