381653800 has 96 divisors (see below), whose sum is σ = 973018080. Its totient is φ = 138067200.

The previous prime is 381653773. The next prime is 381653807. The reversal of 381653800 is 8356183.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (381653807) 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, 622294 + ... + 622906.

It is an arithmetic number, because the mean of its divisors is an integer number (10135605).

Almost surely, 2^381653800 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 381653800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (486509040).

381653800 is an abundant number, since it is smaller than the sum of its proper divisors (591364280).

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

381653800 is a wasteful number, since it uses less digits than its factorization.

381653800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 923 (or 914 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 381653800 is about 19535.9617116742. The cubic root of 381653800 is about 725.3648896471.

The spelling of 381653800 in words is "three hundred eighty-one million, six hundred fifty-three thousand, eight hundred".