381744378 has 24 divisors (see below), whose sum is σ = 834705300. Its totient is φ = 126080064.

The previous prime is 381744361. The next prime is 381744379. The reversal of 381744378 is 873447183.

It can be written as a sum of positive squares in 2 ways, for example, as 334999809 + 46744569 = 18303^2 + 6837^2 .

It is not an unprimeable number, because it can be changed into a prime (381744379) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 95323 + ... + 99246.

Almost surely, 2^381744378 is an apocalyptic number.

381744378 is an abundant number, since it is smaller than the sum of its proper divisors (452960922).

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

381744378 is a wasteful number, since it uses less digits than its factorization.

381744378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194686 (or 194683 counting only the distinct ones).

The product of its digits is 451584, while the sum is 45.

The square root of 381744378 is about 19538.2798116927. The cubic root of 381744378 is about 725.4222687901.

The spelling of 381744378 in words is "three hundred eighty-one million, seven hundred forty-four thousand, three hundred seventy-eight".