381888723 has 4 divisors (see below), whose sum is σ = 509184968. Its totient is φ = 254592480.

The previous prime is 381888707. The next prime is 381888743. The reversal of 381888723 is 327888183.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 381888723 - 2⁴ = 381888707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (381888743) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63648118 + ... + 63648123.

It is an arithmetic number, because the mean of its divisors is an integer number (127296242).

Almost surely, 2^381888723 is an apocalyptic number.

381888723 is a deficient number, since it is larger than the sum of its proper divisors (127296245).

381888723 is a wasteful number, since it uses less digits than its factorization.

381888723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127296244.

The product of its digits is 516096, while the sum is 48.

The square root of 381888723 is about 19541.9733650417. The cubic root of 381888723 is about 725.5136893745.

The spelling of 381888723 in words is "three hundred eighty-one million, eight hundred eighty-eight thousand, seven hundred twenty-three".