3867218384 has 10 divisors (see below), whose sum is σ = 7492735650. Its totient is φ = 1933609184.

The previous prime is 3867218363. The next prime is 3867218431. The reversal of 3867218384 is 4838127683.

It can be written as a sum of positive squares in only one way, i.e., 3367248784 + 499969600 = 58028^2 + 22360^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120850559 + ... + 120850590.

It is an arithmetic number, because the mean of its divisors is an integer number (749273565).

Almost surely, 2^3867218384 is an apocalyptic number.

It is an amenable number.

3867218384 is a deficient number, since it is larger than the sum of its proper divisors (3625517266).

3867218384 is a wasteful number, since it uses less digits than its factorization.

3867218384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241701157 (or 241701151 counting only the distinct ones).

The product of its digits is 1548288, while the sum is 50.

The square root of 3867218384 is about 62186.9631353711. The cubic root of 3867218384 is about 1569.6382229962.

The spelling of 3867218384 in words is "three billion, eight hundred sixty-seven million, two hundred eighteen thousand, three hundred eighty-four".