4638557900238 has 32 divisors (see below), whose sum is σ = 9597295769760. Its totient is φ = 1492825743360.

The previous prime is 4638557900219. The next prime is 4638557900257. The reversal of 4638557900238 is 8320097558364.

It is an interprime number because it is at equal distance from previous prime (4638557900219) and next prime (4638557900257).

It is a congruent number.

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, 5896878 + ... + 6637038.

It is an arithmetic number, because the mean of its divisors is an integer number (299915492805).

Almost surely, 2^{4638557900238} is an apocalyptic number.

4638557900238 is an abundant number, since it is smaller than the sum of its proper divisors (4958737869522).

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

4638557900238 is a wasteful number, since it uses less digits than its factorization.

4638557900238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 776212.

The product of its (nonzero) digits is 43545600, while the sum is 60.

The spelling of 4638557900238 in words is "four trillion, six hundred thirty-eight billion, five hundred fifty-seven million, nine hundred thousand, two hundred thirty-eight".