18823477313 has 2 divisors, whose sum is σ = 18823477314. Its totient is φ = 18823477312.

The previous prime is 18823477279. The next prime is 18823477319. The reversal of 18823477313 is 31377432881.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11788964929 + 7034512384 = 108577^2 + 83872^2 .

It is a cyclic number.

It is not a de Polignac number, because 18823477313 - 2⁶ = 18823477249 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (18823477319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9411738656 + 9411738657.

It is an arithmetic number, because the mean of its divisors is an integer number (9411738657).

Almost surely, 2^18823477313 is an apocalyptic number.

It is an amenable number.

18823477313 is a deficient number, since it is larger than the sum of its proper divisors (1).

18823477313 is an equidigital number, since it uses as much as digits as its factorization.

18823477313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 677376, while the sum is 47.

The spelling of 18823477313 in words is "eighteen billion, eight hundred twenty-three million, four hundred seventy-seven thousand, three hundred thirteen".