6638426074 has 32 divisors (see below), whose sum is σ = 11985408000. Its totient is φ = 2693885040.

The previous prime is 6638426023. The next prime is 6638426107. The reversal of 6638426074 is 4706248366.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 609327 + ... + 620125.

It is an arithmetic number, because the mean of its divisors is an integer number (374544000).

Almost surely, 2^6638426074 is an apocalyptic number.

6638426074 is a deficient number, since it is larger than the sum of its proper divisors (5346981926).

6638426074 is a wasteful number, since it uses less digits than its factorization.

6638426074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13138.

The product of its (nonzero) digits is 1161216, while the sum is 46.

The square root of 6638426074 is about 81476.5369538986. The cubic root of 6638426074 is about 1879.4107548609.

The spelling of 6638426074 in words is "six billion, six hundred thirty-eight million, four hundred twenty-six thousand, seventy-four".