16981934 has 8 divisors (see below), whose sum is σ = 26813640. Its totient is φ = 8044056.

The previous prime is 16981933. The next prime is 16981957. The reversal of 16981934 is 43918961.

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

It is a junction number, because it is equal to n+sod(n) for n = 16981891 and 16981900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16981931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 223409 + ... + 223484.

It is an arithmetic number, because the mean of its divisors is an integer number (3351705).

Almost surely, 2^16981934 is an apocalyptic number.

16981934 is a deficient number, since it is larger than the sum of its proper divisors (9831706).

16981934 is a wasteful number, since it uses less digits than its factorization.

16981934 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 446914.

The product of its digits is 46656, while the sum is 41.

The square root of 16981934 is about 4120.9142189568. The cubic root of 16981934 is about 257.0370429126.

The spelling of 16981934 in words is "sixteen million, nine hundred eighty-one thousand, nine hundred thirty-four".