3878413240 has 32 divisors (see below), whose sum is σ = 9397694880. Its totient is φ = 1432029312.

The previous prime is 3878413237. The next prime is 3878413261. The reversal of 3878413240 is 423148783.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 3878413193 and 3878413202.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3728724 + ... + 3729763.

It is an arithmetic number, because the mean of its divisors is an integer number (293677965).

Almost surely, 2^3878413240 is an apocalyptic number.

It is an amenable number.

3878413240 is an abundant number, since it is smaller than the sum of its proper divisors (5519281640).

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

3878413240 is a wasteful number, since it uses less digits than its factorization.

3878413240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7458511 (or 7458507 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 40.

The square root of 3878413240 is about 62276.9077588154. The cubic root of 3878413240 is about 1571.1513644514.

The spelling of 3878413240 in words is "three billion, eight hundred seventy-eight million, four hundred thirteen thousand, two hundred forty".