3858923820 has 24 divisors (see below), whose sum is σ = 10804986864. Its totient is φ = 1029046336.

The previous prime is 3858923797. The next prime is 3858923821. The reversal of 3858923820 is 283298583.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 3858923820.

It is not an unprimeable number, because it can be changed into a prime (3858923821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32157639 + ... + 32157758.

It is an arithmetic number, because the mean of its divisors is an integer number (450207786).

Almost surely, 2^3858923820 is an apocalyptic number.

3858923820 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3858923820 is an abundant number, since it is smaller than the sum of its proper divisors (6946063044).

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

3858923820 is a wasteful number, since it uses less digits than its factorization.

3858923820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64315409 (or 64315407 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 48.

The square root of 3858923820 is about 62120.2367992911. The cubic root of 3858923820 is about 1568.5152121968.

The spelling of 3858923820 in words is "three billion, eight hundred fifty-eight million, nine hundred twenty-three thousand, eight hundred twenty".