3823855820 has 24 divisors (see below), whose sum is σ = 8046606624. Its totient is φ = 1526397696.

The previous prime is 3823855807. The next prime is 3823855837. The reversal of 3823855820 is 285583283.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 186557 + ... + 206036.

It is an arithmetic number, because the mean of its divisors is an integer number (335275276).

Almost surely, 2^3823855820 is an apocalyptic number.

It is an amenable number.

3823855820 is an abundant number, since it is smaller than the sum of its proper divisors (4222750804).

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

3823855820 is a wasteful number, since it uses less digits than its factorization.

3823855820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393089 (or 393087 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 44.

The square root of 3823855820 is about 61837.3335453591. Note that the first 3 decimals coincide. The cubic root of 3823855820 is about 1563.7494485731.

The spelling of 3823855820 in words is "three billion, eight hundred twenty-three million, eight hundred fifty-five thousand, eight hundred twenty".