3911672144 has 20 divisors (see below), whose sum is σ = 7583291796. Its totient is φ = 1954693632.

The previous prime is 3911672111. The next prime is 3911672161. The reversal of 3911672144 is 4412761193.

It can be written as a sum of positive squares in 2 ways, for example, as 1399657744 + 2512014400 = 37412^2 + 50120^2 .

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 3911672098 and 3911672107.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42809 + ... + 98264.

Almost surely, 2^3911672144 is an apocalyptic number.

It is an amenable number.

3911672144 is a deficient number, since it is larger than the sum of its proper divisors (3671619652).

3911672144 is a wasteful number, since it uses less digits than its factorization.

3911672144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142814 (or 142808 counting only the distinct ones).

The product of its digits is 36288, while the sum is 38.

The square root of 3911672144 is about 62543.3621098195. The cubic root of 3911672144 is about 1575.6296659627.

The spelling of 3911672144 in words is "three billion, nine hundred eleven million, six hundred seventy-two thousand, one hundred forty-four".