4426936638 has 64 divisors (see below), whose sum is σ = 9380689920. Its totient is φ = 1389931488.

The previous prime is 4426936621. The next prime is 4426936639. The reversal of 4426936638 is 8366396244.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4426936639) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 5990073 + ... + 5990811.

It is an arithmetic number, because the mean of its divisors is an integer number (146573280).

Almost surely, 2^4426936638 is an apocalyptic number.

4426936638 is an abundant number, since it is smaller than the sum of its proper divisors (4953753282).

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

4426936638 is a wasteful number, since it uses less digits than its factorization.

4426936638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1373.

The product of its digits is 4478976, while the sum is 51.

The square root of 4426936638 is about 66535.2285484915. The cubic root of 4426936638 is about 1641.9796436664.

The spelling of 4426936638 in words is "four billion, four hundred twenty-six million, nine hundred thirty-six thousand, six hundred thirty-eight".