16381694 has 32 divisors (see below), whose sum is σ = 29350080. Its totient is φ = 6709248.

The previous prime is 16381691. The next prime is 16381699. The reversal of 16381694 is 49618361.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16381691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63614 + ... + 63870.

It is an arithmetic number, because the mean of its divisors is an integer number (917190).

Almost surely, 2^16381694 is an apocalyptic number.

16381694 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

16381694 is a deficient number, since it is larger than the sum of its proper divisors (12968386).

16381694 is a wasteful number, since it uses less digits than its factorization.

16381694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 452.

The product of its digits is 31104, while the sum is 38.

The square root of 16381694 is about 4047.4305429494. The cubic root of 16381694 is about 253.9722519133.

It can be divided in two parts, 1638 and 1694, that multiplied together give a palindrome (2774772).

The spelling of 16381694 in words is "sixteen million, three hundred eighty-one thousand, six hundred ninety-four".