16430861 has 2 divisors, whose sum is σ = 16430862. Its totient is φ = 16430860.

The previous prime is 16430831. The next prime is 16430867. The reversal of 16430861 is 16803461.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15288100 + 1142761 = 3910^2 + 1069^2 .

It is a cyclic number.

It is not a de Polignac number, because 16430861 - 2¹⁴ = 16414477 is a prime.

It is a Chen prime.

It is a plaindrome in base 14.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16430867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8215430 + 8215431.

It is an arithmetic number, because the mean of its divisors is an integer number (8215431).

Almost surely, 2^16430861 is an apocalyptic number.

It is an amenable number.

16430861 is a deficient number, since it is larger than the sum of its proper divisors (1).

16430861 is an equidigital number, since it uses as much as digits as its factorization.

16430861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 16430861 is about 4053.4998458123. The cubic root of 16430861 is about 254.2260836574.

The spelling of 16430861 in words is "sixteen million, four hundred thirty thousand, eight hundred sixty-one".