381149846 has 16 divisors (see below), whose sum is σ = 712800000. Its totient is φ = 148499880.

The previous prime is 381149789. The next prime is 381149849. The reversal of 381149846 is 648941183.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 381149797 and 381149806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381149849) 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 in 7 ways as a sum of consecutive naturals, for example, 1237346 + ... + 1237653.

It is an arithmetic number, because the mean of its divisors is an integer number (44550000).

Almost surely, 2^381149846 is an apocalyptic number.

381149846 is a deficient number, since it is larger than the sum of its proper divisors (331650154).

381149846 is a wasteful number, since it uses less digits than its factorization.

381149846 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2475019.

The product of its digits is 165888, while the sum is 44.

The square root of 381149846 is about 19523.0593401751. The cubic root of 381149846 is about 725.0454801433.

The spelling of 381149846 in words is "three hundred eighty-one million, one hundred forty-nine thousand, eight hundred forty-six".