13824031861 has 2 divisors, whose sum is σ = 13824031862. Its totient is φ = 13824031860.

The previous prime is 13824031847. The next prime is 13824031867. The reversal of 13824031861 is 16813042831.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11005059025 + 2818972836 = 104905^2 + 53094^2 .

It is a cyclic number.

It is not a de Polignac number, because 13824031861 - 2⁵ = 13824031829 is a prime.

It is a super-2 number, since 2×13824031861² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13824031861.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13824031867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6912015930 + 6912015931.

It is an arithmetic number, because the mean of its divisors is an integer number (6912015931).

Almost surely, 2^13824031861 is an apocalyptic number.

It is an amenable number.

13824031861 is a deficient number, since it is larger than the sum of its proper divisors (1).

13824031861 is an equidigital number, since it uses as much as digits as its factorization.

13824031861 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27648, while the sum is 37.

The spelling of 13824031861 in words is "thirteen billion, eight hundred twenty-four million, thirty-one thousand, eight hundred sixty-one".