16381634 has 8 divisors (see below), whose sum is σ = 24939408. Its totient is φ = 8068500.

The previous prime is 16381633. The next prime is 16381649. The reversal of 16381634 is 43618361.

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

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 16381634.

It is not an unprimeable number, because it can be changed into a prime (16381633) 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, 60992 + ... + 61259.

It is an arithmetic number, because the mean of its divisors is an integer number (3117426).

Almost surely, 2^16381634 is an apocalyptic number.

16381634 is a deficient number, since it is larger than the sum of its proper divisors (8557774).

16381634 is a wasteful number, since it uses less digits than its factorization.

16381634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122320.

The product of its digits is 10368, while the sum is 32.

The square root of 16381634 is about 4047.4231308328. The cubic root of 16381634 is about 253.9719418446.

Adding to 16381634 its reverse (43618361), we get a palindrome (59999995).

The spelling of 16381634 in words is "sixteen million, three hundred eighty-one thousand, six hundred thirty-four".