438381854 has 8 divisors (see below), whose sum is σ = 658248768. Its totient is φ = 218965600.

The previous prime is 438381821. The next prime is 438381857. The reversal of 438381854 is 458183834.

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

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (438381857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110222 + ... + 114129.

It is an arithmetic number, because the mean of its divisors is an integer number (82281096).

Almost surely, 2^438381854 is an apocalyptic number.

438381854 is a deficient number, since it is larger than the sum of its proper divisors (219866914).

438381854 is a wasteful number, since it uses less digits than its factorization.

438381854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225330.

The product of its digits is 368640, while the sum is 44.

The square root of 438381854 is about 20937.5703939115. The cubic root of 438381854 is about 759.6569631481.

The spelling of 438381854 in words is "four hundred thirty-eight million, three hundred eighty-one thousand, eight hundred fifty-four".