16381667 has 8 divisors (see below), whose sum is σ = 17645760. Its totient is φ = 15157800.

The previous prime is 16381661. The next prime is 16381691. The reversal of 16381667 is 76618361.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16381667 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16381667.

It is not an unprimeable number, because it can be changed into a prime (16381661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9209 + ... + 10842.

It is an arithmetic number, because the mean of its divisors is an integer number (2205720).

Almost surely, 2^16381667 is an apocalyptic number.

16381667 is a deficient number, since it is larger than the sum of its proper divisors (1264093).

16381667 is a wasteful number, since it uses less digits than its factorization.

16381667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20113.

The product of its digits is 36288, while the sum is 38.

The square root of 16381667 is about 4047.4272074986. The cubic root of 16381667 is about 253.9721123825.

The spelling of 16381667 in words is "sixteen million, three hundred eighty-one thousand, six hundred sixty-seven".