4638455838 has 48 divisors (see below), whose sum is σ = 10292835696. Its totient is φ = 1508855040.

The previous prime is 4638455813. The next prime is 4638455863. The reversal of 4638455838 is 8385548364.

4638455838 is a `hidden beast` number, since 4 + 6 + 3 + 84 + 558 + 3 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (4638455813) and next prime (4638455863).

It is a super-2 number, since 2×4638455838² = 43030545122152564488, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1252806 + ... + 1256502.

It is an arithmetic number, because the mean of its divisors is an integer number (214434077).

Almost surely, 2^4638455838 is an apocalyptic number.

4638455838 is an abundant number, since it is smaller than the sum of its proper divisors (5654379858).

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

4638455838 is a wasteful number, since it uses less digits than its factorization.

4638455838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5369 (or 5366 counting only the distinct ones).

The product of its digits is 11059200, while the sum is 54.

The square root of 4638455838 is about 68106.2099811757. The cubic root of 4638455838 is about 1667.7251393102.

The spelling of 4638455838 in words is "four billion, six hundred thirty-eight million, four hundred fifty-five thousand, eight hundred thirty-eight".