381500438 has 8 divisors (see below), whose sum is σ = 624273480. Its totient is φ = 173409280.

The previous prime is 381500437. The next prime is 381500447. The reversal of 381500438 is 834005183.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381500437) 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, 8670443 + ... + 8670486.

It is an arithmetic number, because the mean of its divisors is an integer number (78034185).

Almost surely, 2^381500438 is an apocalyptic number.

381500438 is a deficient number, since it is larger than the sum of its proper divisors (242773042).

381500438 is a wasteful number, since it uses less digits than its factorization.

381500438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17340942.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 381500438 is about 19532.0361969765. The cubic root of 381500438 is about 725.2677175380.

The spelling of 381500438 in words is "three hundred eighty-one million, five hundred thousand, four hundred thirty-eight".