3918444372 has 18 divisors (see below), whose sum is σ = 9904956698. Its totient is φ = 1306148112.

The previous prime is 3918444353. The next prime is 3918444403. The reversal of 3918444372 is 2734448193.

3918444372 is a `hidden beast` number, since 39 + 184 + 4 + 437 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 2452626576 + 1465817796 = 49524^2 + 38286^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 54422803 + ... + 54422874.

Almost surely, 2^3918444372 is an apocalyptic number.

It is an amenable number.

3918444372 is an abundant number, since it is smaller than the sum of its proper divisors (5986512326).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3918444372 is a wasteful number, since it uses less digits than its factorization.

3918444372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108845687 (or 108845682 counting only the distinct ones).

The product of its digits is 580608, while the sum is 45.

The square root of 3918444372 is about 62597.4789588207. The cubic root of 3918444372 is about 1576.5384308891.

The spelling of 3918444372 in words is "three billion, nine hundred eighteen million, four hundred forty-four thousand, three hundred seventy-two".