16942861 has 4 divisors (see below), whose sum is σ = 18246172. Its totient is φ = 15639552.

The previous prime is 16942859. The next prime is 16942879. The reversal of 16942861 is 16824961.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16824961 = 727 ⋅23143.

It can be written as a sum of positive squares in 2 ways, for example, as 8590761 + 8352100 = 2931^2 + 2890^2 .

It is a cyclic number.

It is not a de Polignac number, because 16942861 - 2¹ = 16942859 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 16942861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16942831) 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, 651636 + ... + 651661.

It is an arithmetic number, because the mean of its divisors is an integer number (4561543).

Almost surely, 2^16942861 is an apocalyptic number.

It is an amenable number.

16942861 is a deficient number, since it is larger than the sum of its proper divisors (1303311).

16942861 is a wasteful number, since it uses less digits than its factorization.

16942861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1303310.

The product of its digits is 20736, while the sum is 37.

The square root of 16942861 is about 4116.1706718745. The cubic root of 16942861 is about 256.8397563746.

The spelling of 16942861 in words is "sixteen million, nine hundred forty-two thousand, eight hundred sixty-one".