381558146 has 8 divisors (see below), whose sum is σ = 574360464. Its totient is φ = 190104660.

The previous prime is 381558143. The next prime is 381558161. The reversal of 381558146 is 641855183.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (381558143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 336500 + ... + 337631.

It is an arithmetic number, because the mean of its divisors is an integer number (71795058).

Almost surely, 2^381558146 is an apocalyptic number.

381558146 is a deficient number, since it is larger than the sum of its proper divisors (192802318).

381558146 is a wasteful number, since it uses less digits than its factorization.

381558146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 674416.

The product of its digits is 115200, while the sum is 41.

The square root of 381558146 is about 19533.5134064510. The cubic root of 381558146 is about 725.3042851144.

The spelling of 381558146 in words is "three hundred eighty-one million, five hundred fifty-eight thousand, one hundred forty-six".