381498438 has 16 divisors (see below), whose sum is σ = 773449776. Its totient is φ = 125424000.

The previous prime is 381498391. The next prime is 381498443. The reversal of 381498438 is 834894183.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 435063 + ... + 435938.

It is an arithmetic number, because the mean of its divisors is an integer number (48340611).

Almost surely, 2^381498438 is an apocalyptic number.

381498438 is an abundant number, since it is smaller than the sum of its proper divisors (391951338).

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

381498438 is a wasteful number, since it uses less digits than its factorization.

381498438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 871079.

The product of its digits is 663552, while the sum is 48.

The square root of 381498438 is about 19531.9849989703. The cubic root of 381498438 is about 725.2664501406.

The spelling of 381498438 in words is "three hundred eighty-one million, four hundred ninety-eight thousand, four hundred thirty-eight".