381498805 has 8 divisors (see below), whose sum is σ = 459028152. Its totient is φ = 304379328.

The previous prime is 381498797. The next prime is 381498847. The reversal of 381498805 is 508894183.

It can be written as a sum of positive squares in 4 ways, for example, as 143784081 + 237714724 = 11991^2 + 15418^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 381498805 - 2³ = 381498797 is a prime.

It is a Duffinian 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, 100414 + ... + 104143.

It is an arithmetic number, because the mean of its divisors is an integer number (57378519).

Almost surely, 2^381498805 is an apocalyptic number.

It is an amenable number.

381498805 is a deficient number, since it is larger than the sum of its proper divisors (77529347).

381498805 is a wasteful number, since it uses less digits than its factorization.

381498805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204935.

The product of its (nonzero) digits is 276480, while the sum is 46.

The square root of 381498805 is about 19531.9943938145. The cubic root of 381498805 is about 725.2666827084.

The spelling of 381498805 in words is "three hundred eighty-one million, four hundred ninety-eight thousand, eight hundred five".