381338 has 4 divisors (see below), whose sum is σ = 572010. Its totient is φ = 190668.

The previous prime is 381323. The next prime is 381343. The reversal of 381338 is 833183.

381338 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 833183 = 13 ⋅64091.

It can be written as a sum of positive squares in only one way, i.e., 223729 + 157609 = 473^2 + 397^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95333 + ... + 95336.

2³⁸¹³³⁸ is an apocalyptic number.

381338 is a deficient number, since it is larger than the sum of its proper divisors (190672).

381338 is a wasteful number, since it uses less digits than its factorization.

381338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190671.

The product of its digits is 1728, while the sum is 26.

The square root of 381338 is about 617.5257079669. The cubic root of 381338 is about 72.5164766357.

It can be divided in two parts, 381 and 338, that multiplied together give a triangular number (128778 = T₅₀₇).

The spelling of 381338 in words is "three hundred eighty-one thousand, three hundred thirty-eight".