2018274734173 has 2 divisors, whose sum is σ = 2018274734174. Its totient is φ = 2018274734172.

The previous prime is 2018274734143. The next prime is 2018274734183. The reversal of 2018274734173 is 3714374728102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1977406877209 + 40867856964 = 1406203^2 + 202158^2 .

It is a cyclic number.

It is not a de Polignac number, because 2018274734173 - 2⁵ = 2018274734141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2018274734143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1009137367086 + 1009137367087.

It is an arithmetic number, because the mean of its divisors is an integer number (1009137367087).

Almost surely, 2^{2018274734173} is an apocalyptic number.

It is an amenable number.

2018274734173 is a deficient number, since it is larger than the sum of its proper divisors (1).

2018274734173 is an equidigital number, since it uses as much as digits as its factorization.

2018274734173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1580544, while the sum is 49.

The spelling of 2018274734173 in words is "two trillion, eighteen billion, two hundred seventy-four million, seven hundred thirty-four thousand, one hundred seventy-three".