18471410813 has 2 divisors, whose sum is σ = 18471410814. Its totient is φ = 18471410812.

The previous prime is 18471410807. The next prime is 18471410851. The reversal of 18471410813 is 31801417481.

It is an a-pointer prime, because the next prime (18471410851) can be obtained adding 18471410813 to its sum of digits (38).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17780088964 + 691321849 = 133342^2 + 26293^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18471410813 is a prime.

It is a super-2 number, since 2×18471410813² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18471410863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9235705406 + 9235705407.

It is an arithmetic number, because the mean of its divisors is an integer number (9235705407).

Almost surely, 2^18471410813 is an apocalyptic number.

It is an amenable number.

18471410813 is a deficient number, since it is larger than the sum of its proper divisors (1).

18471410813 is an equidigital number, since it uses as much as digits as its factorization.

18471410813 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21504, while the sum is 38.

The spelling of 18471410813 in words is "eighteen billion, four hundred seventy-one million, four hundred ten thousand, eight hundred thirteen".