381474746 has 4 divisors (see below), whose sum is σ = 572212122. Its totient is φ = 190737372.

The previous prime is 381474739. The next prime is 381474763. The reversal of 381474746 is 647474183.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 647474183 = 239 ⋅2709097.

It can be written as a sum of positive squares in only one way, i.e., 287675521 + 93799225 = 16961^2 + 9685^2 .

It is a junction number, because it is equal to n+sod(n) for n = 381474697 and 381474706.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95368685 + ... + 95368688.

Almost surely, 2^381474746 is an apocalyptic number.

381474746 is a deficient number, since it is larger than the sum of its proper divisors (190737376).

381474746 is a wasteful number, since it uses less digits than its factorization.

381474746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190737375.

The product of its digits is 451584, while the sum is 44.

The square root of 381474746 is about 19531.3784971773. The cubic root of 381474746 is about 725.2514362142.

The spelling of 381474746 in words is "three hundred eighty-one million, four hundred seventy-four thousand, seven hundred forty-six".