18610122473 has 2 divisors, whose sum is σ = 18610122474. Its totient is φ = 18610122472.

The previous prime is 18610122449. The next prime is 18610122481. The reversal of 18610122473 is 37422101681.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11175026944 + 7435095529 = 105712^2 + 86227^2 .

It is a cyclic number.

It is not a de Polignac number, because 18610122473 - 2⁶ = 18610122409 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 (18610122403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9305061236 + 9305061237.

It is an arithmetic number, because the mean of its divisors is an integer number (9305061237).

Almost surely, 2^18610122473 is an apocalyptic number.

It is an amenable number.

18610122473 is a deficient number, since it is larger than the sum of its proper divisors (1).

18610122473 is an equidigital number, since it uses as much as digits as its factorization.

18610122473 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16128, while the sum is 35.

The spelling of 18610122473 in words is "eighteen billion, six hundred ten million, one hundred twenty-two thousand, four hundred seventy-three".