3836843640 has 224 divisors, whose sum is σ = 14793274080. Its totient is φ = 876946176.

The previous prime is 3836843587. The next prime is 3836843657. The reversal of 3836843640 is 463486383.

3836843640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 194722 + ... + 213518.

Almost surely, 2^3836843640 is an apocalyptic number.

3836843640 is a gapful number since it is divisible by the number (30) 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 3836843640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7396637040).

3836843640 is an abundant number, since it is smaller than the sum of its proper divisors (10956430440).

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

3836843640 is a wasteful number, since it uses less digits than its factorization.

3836843640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18833 (or 18814 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 45.

The square root of 3836843640 is about 61942.2605335001. The cubic root of 3836843640 is about 1565.5178856762.

The spelling of 3836843640 in words is "three billion, eight hundred thirty-six million, eight hundred forty-three thousand, six hundred forty".