3850812021 has 24 divisors (see below), whose sum is σ = 5929325760. Its totient is φ = 2177667072.

The previous prime is 3850811989. The next prime is 3850812041. The reversal of 3850812021 is 1202180583.

It is not a de Polignac number, because 3850812021 - 2⁵ = 3850811989 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3850812021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3850812041) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 187845 + ... + 207333.

It is an arithmetic number, because the mean of its divisors is an integer number (247055240).

Almost surely, 2^3850812021 is an apocalyptic number.

It is an amenable number.

3850812021 is a deficient number, since it is larger than the sum of its proper divisors (2078513739).

3850812021 is an equidigital number, since it uses as much as digits as its factorization.

3850812021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19693 (or 19596 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 30.

The square root of 3850812021 is about 62054.9113366541. The cubic root of 3850812021 is about 1567.4153886499.

The spelling of 3850812021 in words is "three billion, eight hundred fifty million, eight hundred twelve thousand, twenty-one".