381485443438 has 8 divisors (see below), whose sum is σ = 624248907480. Its totient is φ = 173402474280.

The previous prime is 381485443411. The next prime is 381485443447. The reversal of 381485443438 is 834344584183.

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

It is a super-2 number, since 2×381485443438² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8670123693 + ... + 8670123736.

It is an arithmetic number, because the mean of its divisors is an integer number (78031113435).

Almost surely, 2^381485443438 is an apocalyptic number.

381485443438 is a deficient number, since it is larger than the sum of its proper divisors (242763464042).

381485443438 is a wasteful number, since it uses less digits than its factorization.

381485443438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17340247442.

The product of its digits is 17694720, while the sum is 55.

The spelling of 381485443438 in words is "three hundred eighty-one billion, four hundred eighty-five million, four hundred forty-three thousand, four hundred thirty-eight".