3818663136 has 192 divisors, whose sum is σ = 11822630400. Its totient is φ = 1196540928.

The previous prime is 3818663129. The next prime is 3818663141. The reversal of 3818663136 is 6313668183.

3818663136 is a `hidden beast` number, since 3 + 8 + 1 + 8 + 6 + 631 + 3 + 6 = 666.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 3818663091 and 3818663100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1170820 + ... + 1174076.

It is an arithmetic number, because the mean of its divisors is an integer number (61576200).

Almost surely, 2^3818663136 is an apocalyptic number.

3818663136 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3818663136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5911315200).

3818663136 is an abundant number, since it is smaller than the sum of its proper divisors (8003967264).

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

3818663136 is a wasteful number, since it uses less digits than its factorization.

3818663136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3358 (or 3344 counting only the distinct ones).

The product of its digits is 373248, while the sum is 45.

The square root of 3818663136 is about 61795.3326392860. The cubic root of 3818663136 is about 1563.0412859663.

The spelling of 3818663136 in words is "three billion, eight hundred eighteen million, six hundred sixty-three thousand, one hundred thirty-six".