381618223 has 12 divisors (see below), whose sum is σ = 446871792. Its totient is φ = 324928800.

The previous prime is 381618217. The next prime is 381618241. The reversal of 381618223 is 322816183.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-381618223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381618253) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18390 + ... + 33187.

It is an arithmetic number, because the mean of its divisors is an integer number (37239316).

Almost surely, 2^381618223 is an apocalyptic number.

381618223 is a deficient number, since it is larger than the sum of its proper divisors (65253569).

381618223 is a wasteful number, since it uses less digits than its factorization.

381618223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51742 (or 51735 counting only the distinct ones).

The product of its digits is 13824, while the sum is 34.

The square root of 381618223 is about 19535.0511389144. The cubic root of 381618223 is about 725.3423499278.

The spelling of 381618223 in words is "three hundred eighty-one million, six hundred eighteen thousand, two hundred twenty-three".