16834381 has 4 divisors (see below), whose sum is σ = 16876764. Its totient is φ = 16792000.

The previous prime is 16834379. The next prime is 16834387. The reversal of 16834381 is 18343861.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8797156 + 8037225 = 2966^2 + 2835^2 .

It is a cyclic number.

It is not a de Polignac number, because 16834381 - 2¹ = 16834379 is a prime.

It is a super-2 number, since 2×16834381² = 566792767306322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16834387) 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, 20590 + ... + 21391.

It is an arithmetic number, because the mean of its divisors is an integer number (4219191).

Almost surely, 2^16834381 is an apocalyptic number.

It is an amenable number.

16834381 is a deficient number, since it is larger than the sum of its proper divisors (42383).

16834381 is an equidigital number, since it uses as much as digits as its factorization.

16834381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42382.

The product of its digits is 13824, while the sum is 34.

The square root of 16834381 is about 4102.9722153580. The cubic root of 16834381 is about 256.2904266181.

The spelling of 16834381 in words is "sixteen million, eight hundred thirty-four thousand, three hundred eighty-one".