4078138432 has 28 divisors (see below), whose sum is σ = 8568590940. Its totient is φ = 1919123456.

The previous prime is 4078138417. The next prime is 4078138453. The reversal of 4078138432 is 2348318704.

It can be written as a sum of positive squares in 2 ways, for example, as 1930372096 + 2147766336 = 43936^2 + 46344^2 .

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, 1873057 + ... + 1875232.

It is an arithmetic number, because the mean of its divisors is an integer number (306021105).

Almost surely, 2^4078138432 is an apocalyptic number.

It is an amenable number.

4078138432 is an abundant number, since it is smaller than the sum of its proper divisors (4490452508).

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

4078138432 is a wasteful number, since it uses less digits than its factorization.

4078138432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3748318 (or 3748308 counting only the distinct ones).

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

The square root of 4078138432 is about 63860.3040393639. The cubic root of 4078138432 is about 1597.6708861631.

The spelling of 4078138432 in words is "four billion, seventy-eight million, one hundred thirty-eight thousand, four hundred thirty-two".