383861620 has 12 divisors (see below), whose sum is σ = 806109444. Its totient is φ = 153544640.

The previous prime is 383861609. The next prime is 383861641. The reversal of 383861620 is 26168383.

It can be written as a sum of positive squares in 2 ways, for example, as 100881936 + 282979684 = 10044^2 + 16822^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 383861620.

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, 9596521 + ... + 9596560.

It is an arithmetic number, because the mean of its divisors is an integer number (67175787).

Almost surely, 2^383861620 is an apocalyptic number.

It is an amenable number.

383861620 is an abundant number, since it is smaller than the sum of its proper divisors (422247824).

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

383861620 is a wasteful number, since it uses less digits than its factorization.

383861620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19193090 (or 19193088 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 383861620 is about 19592.3867867088. The cubic root of 383861620 is about 726.7609165222.

The spelling of 383861620 in words is "three hundred eighty-three million, eight hundred sixty-one thousand, six hundred twenty".