381038478 has 8 divisors (see below), whose sum is σ = 762076968. Its totient is φ = 127012824.

The previous prime is 381038473. The next prime is 381038479. The reversal of 381038478 is 874830183.

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

381038478 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381038473) 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 3 ways as a sum of consecutive naturals, for example, 31753201 + ... + 31753212.

It is an arithmetic number, because the mean of its divisors is an integer number (95259621).

Almost surely, 2^381038478 is an apocalyptic number.

381038478 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

381038478 is a wasteful number, since it uses less digits than its factorization.

381038478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63506418.

The product of its (nonzero) digits is 129024, while the sum is 42.

The square root of 381038478 is about 19520.2069148869. The cubic root of 381038478 is about 724.9748563615.

The spelling of 381038478 in words is "three hundred eighty-one million, thirty-eight thousand, four hundred seventy-eight".