381560823 has 54 divisors (see below), whose sum is σ = 664666184. Its totient is φ = 206605872.

The previous prime is 381560797. The next prime is 381560827. The reversal of 381560823 is 328065183.

381560823 is a `hidden beast` number, since 38 + 15 + 608 + 2 + 3 = 666.

It is not a de Polignac number, because 381560823 - 2⁶ = 381560759 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381560827) by changing a digit.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 3565936 + ... + 3566042.

Almost surely, 2^381560823 is an apocalyptic number.

381560823 is a deficient number, since it is larger than the sum of its proper divisors (283105361).

381560823 is a wasteful number, since it uses less digits than its factorization.

381560823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273 (or 140 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 381560823 is about 19533.5819295899. The cubic root of 381560823 is about 725.3059813478.

The spelling of 381560823 in words is "three hundred eighty-one million, five hundred sixty thousand, eight hundred twenty-three".