3878240544 has 72 divisors (see below), whose sum is σ = 11326851900. Its totient is φ = 1257804288.

The previous prime is 3878240543. The next prime is 3878240567. The reversal of 3878240544 is 4450428783.

It is a happy number.

3878240544 is a `hidden beast` number, since 3 + 87 + 8 + 24 + 0 + 544 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 3797024400 + 81216144 = 61620^2 + 9012^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a self number, because there is not a number n which added to its sum of digits gives 3878240544.

It is not an unprimeable number, because it can be changed into a prime (3878240543) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 171319 + ... + 192630.

Almost surely, 2^3878240544 is an apocalyptic number.

It is an amenable number.

3878240544 is an abundant number, since it is smaller than the sum of its proper divisors (7448611356).

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

3878240544 is a wasteful number, since it uses less digits than its factorization.

3878240544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364002 (or 363991 counting only the distinct ones).

The product of its (nonzero) digits is 860160, while the sum is 45.

The square root of 3878240544 is about 62275.5212262411. The cubic root of 3878240544 is about 1571.1280442973.

The spelling of 3878240544 in words is "three billion, eight hundred seventy-eight million, two hundred forty thousand, five hundred forty-four".