4638798136 has 32 divisors (see below), whose sum is σ = 9943129440. Its totient is φ = 1987486848.

The previous prime is 4638798133. The next prime is 4638798137. The reversal of 4638798136 is 6318978364.

It is a happy number.

It is a Smith number, since the sum of its digits (55) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4638798133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 228430 + ... + 247906.

It is an arithmetic number, because the mean of its divisors is an integer number (310722795).

Almost surely, 2^4638798136 is an apocalyptic number.

It is an amenable number.

4638798136 is an abundant number, since it is smaller than the sum of its proper divisors (5304331304).

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

4638798136 is a wasteful number, since it uses less digits than its factorization.

4638798136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23743 (or 23739 counting only the distinct ones).

The product of its digits is 5225472, while the sum is 55.

The square root of 4638798136 is about 68108.7229068348. The cubic root of 4638798136 is about 1667.7661619377.

The spelling of 4638798136 in words is "four billion, six hundred thirty-eight million, seven hundred ninety-eight thousand, one hundred thirty-six".