381311774 has 4 divisors (see below), whose sum is σ = 571967664. Its totient is φ = 190655886.

The previous prime is 381311773. The next prime is 381311783. The reversal of 381311774 is 477113183.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 477113183 = 223 ⋅2139521.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381311773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95327942 + ... + 95327945.

It is an arithmetic number, because the mean of its divisors is an integer number (142991916).

Almost surely, 2^381311774 is an apocalyptic number.

381311774 is a deficient number, since it is larger than the sum of its proper divisors (190655890).

381311774 is a wasteful number, since it uses less digits than its factorization.

381311774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190655889.

The product of its digits is 14112, while the sum is 35.

The square root of 381311774 is about 19527.2059957384. The cubic root of 381311774 is about 725.1481419035.

The spelling of 381311774 in words is "three hundred eighty-one million, three hundred eleven thousand, seven hundred seventy-four".