381674 has 4 divisors (see below), whose sum is σ = 572514. Its totient is φ = 190836.

The previous prime is 381673. The next prime is 381697. The reversal of 381674 is 476183.

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

It can be written as a sum of positive squares in only one way, i.e., 368449 + 13225 = 607^2 + 115^2 .

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (381673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95417 + ... + 95420.

2³⁸¹⁶⁷⁴ is an apocalyptic number.

381674 is a deficient number, since it is larger than the sum of its proper divisors (190840).

381674 is a wasteful number, since it uses less digits than its factorization.

381674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190839.

The product of its digits is 4032, while the sum is 29.

The square root of 381674 is about 617.7977015173. The cubic root of 381674 is about 72.5377686683.

The spelling of 381674 in words is "three hundred eighty-one thousand, six hundred seventy-four".