18610273049 has 2 divisors, whose sum is σ = 18610273050. Its totient is φ = 18610273048.

The previous prime is 18610273013. The next prime is 18610273051. The reversal of 18610273049 is 94037201681.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16588152025 + 2022121024 = 128795^2 + 44968^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18610273049 is a prime.

It is a super-4 number, since 4×18610273049⁴ (a number of 42 digits) contains 4444 as substring.

Together with 18610273051, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 18610272997 and 18610273015.

It is not a weakly prime, because it can be changed into another prime (18610273069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9305136524 + 9305136525.

It is an arithmetic number, because the mean of its divisors is an integer number (9305136525).

Almost surely, 2^18610273049 is an apocalyptic number.

It is an amenable number.

18610273049 is a deficient number, since it is larger than the sum of its proper divisors (1).

18610273049 is an equidigital number, since it uses as much as digits as its factorization.

18610273049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72576, while the sum is 41.

The spelling of 18610273049 in words is "eighteen billion, six hundred ten million, two hundred seventy-three thousand, forty-nine".