23194861 has 2 divisors, whose sum is σ = 23194862. Its totient is φ = 23194860.

The previous prime is 23194859. The next prime is 23194883. The reversal of 23194861 is 16849132.

23194861 = 3405² + 3406².

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11600836 + 11594025 = 3406^2 + 3405^2 .

It is a cyclic number.

It is not a de Polignac number, because 23194861 - 2¹ = 23194859 is a prime.

Together with 23194859, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23194811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11597430 + 11597431.

It is an arithmetic number, because the mean of its divisors is an integer number (11597431).

Almost surely, 2^23194861 is an apocalyptic number.

23194861 is the 3406-th centered square number.

It is an amenable number.

23194861 is a deficient number, since it is larger than the sum of its proper divisors (1).

23194861 is an equidigital number, since it uses as much as digits as its factorization.

23194861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10368, while the sum is 34.

The square root of 23194861 is about 4816.1043385707. The cubic root of 23194861 is about 285.1875691500.

The spelling of 23194861 in words is "twenty-three million, one hundred ninety-four thousand, eight hundred sixty-one".