3768921820 has 12 divisors (see below), whose sum is σ = 7914735864. Its totient is φ = 1507568720.

The previous prime is 3768921817. The next prime is 3768921857. The reversal of 3768921820 is 281298673.

3768921820 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×3768921820² = 28409543370544224800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94223026 + ... + 94223065.

It is an arithmetic number, because the mean of its divisors is an integer number (659561322).

Almost surely, 2^3768921820 is an apocalyptic number.

It is an amenable number.

3768921820 is an abundant number, since it is smaller than the sum of its proper divisors (4145814044).

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

3768921820 is a wasteful number, since it uses less digits than its factorization.

3768921820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188446100 (or 188446098 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 46.

The square root of 3768921820 is about 61391.5451833557. The cubic root of 3768921820 is about 1556.2249588289.

The spelling of 3768921820 in words is "three billion, seven hundred sixty-eight million, nine hundred twenty-one thousand, eight hundred twenty".