16861373 has 4 divisors (see below), whose sum is σ = 17272668. Its totient is φ = 16450080.

The previous prime is 16861357. The next prime is 16861387. The reversal of 16861373 is 37316861.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 515524 + 16345849 = 718^2 + 4043^2 .

It is a cyclic number.

It is not a de Polignac number, because 16861373 - 2⁴ = 16861357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16861343) 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, 205586 + ... + 205667.

It is an arithmetic number, because the mean of its divisors is an integer number (4318167).

Almost surely, 2^16861373 is an apocalyptic number.

It is an amenable number.

16861373 is a deficient number, since it is larger than the sum of its proper divisors (411295).

16861373 is an equidigital number, since it uses as much as digits as its factorization.

16861373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411294.

The product of its digits is 18144, while the sum is 35.

The square root of 16861373 is about 4106.2602206874. The cubic root of 16861373 is about 256.4273309131.

The spelling of 16861373 in words is "sixteen million, eight hundred sixty-one thousand, three hundred seventy-three".