6438004148 has 24 divisors (see below), whose sum is σ = 11379454464. Its totient is φ = 3186892800.

The previous prime is 6438004123. The next prime is 6438004151. The reversal of 6438004148 is 8414008346.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 141236 + ... + 181172.

It is an arithmetic number, because the mean of its divisors is an integer number (474143936).

Almost surely, 2^6438004148 is an apocalyptic number.

It is an amenable number.

6438004148 is a deficient number, since it is larger than the sum of its proper divisors (4941450316).

6438004148 is a wasteful number, since it uses less digits than its factorization.

6438004148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40343 (or 40341 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 38.

The square root of 6438004148 is about 80237.1743520421. The cubic root of 6438004148 is about 1860.3032754024.

The spelling of 6438004148 in words is "six billion, four hundred thirty-eight million, four thousand, one hundred forty-eight".