18514739953 has 2 divisors, whose sum is σ = 18514739954. Its totient is φ = 18514739952.

The previous prime is 18514739951. The next prime is 18514739989. The reversal of 18514739953 is 35993741581.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10801860624 + 7712879329 = 103932^2 + 87823^2 .

It is a cyclic number.

It is not a de Polignac number, because 18514739953 - 2¹ = 18514739951 is a prime.

Together with 18514739951, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 18514739894 and 18514739903.

It is not a weakly prime, because it can be changed into another prime (18514739951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9257369976 + 9257369977.

It is an arithmetic number, because the mean of its divisors is an integer number (9257369977).

Almost surely, 2^18514739953 is an apocalyptic number.

It is an amenable number.

18514739953 is a deficient number, since it is larger than the sum of its proper divisors (1).

18514739953 is an equidigital number, since it uses as much as digits as its factorization.

18514739953 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4082400, while the sum is 55.

The spelling of 18514739953 in words is "eighteen billion, five hundred fourteen million, seven hundred thirty-nine thousand, nine hundred fifty-three".