14381431861 has 2 divisors, whose sum is σ = 14381431862. Its totient is φ = 14381431860.

The previous prime is 14381431819. The next prime is 14381431901. The reversal of 14381431861 is 16813418341.

It is an a-pointer prime, because the next prime (14381431901) can be obtained adding 14381431861 to its sum of digits (40).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9468263025 + 4913168836 = 97305^2 + 70094^2 .

It is an emirp because it is prime and its reverse (16813418341) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 14381431861 - 2¹¹ = 14381429813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14381431811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7190715930 + 7190715931.

It is an arithmetic number, because the mean of its divisors is an integer number (7190715931).

Almost surely, 2^14381431861 is an apocalyptic number.

It is an amenable number.

14381431861 is a deficient number, since it is larger than the sum of its proper divisors (1).

14381431861 is an equidigital number, since it uses as much as digits as its factorization.

14381431861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 55296, while the sum is 40.

The spelling of 14381431861 in words is "fourteen billion, three hundred eighty-one million, four hundred thirty-one thousand, eight hundred sixty-one".