18274142357 has 2 divisors, whose sum is σ = 18274142358. Its totient is φ = 18274142356.

The previous prime is 18274142323. The next prime is 18274142407. The reversal of 18274142357 is 75324147281.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16616756836 + 1657385521 = 128906^2 + 40711^2 .

It is a cyclic number.

It is not a de Polignac number, because 18274142357 - 2³⁰ = 17200400533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18274142057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9137071178 + 9137071179.

It is an arithmetic number, because the mean of its divisors is an integer number (9137071179).

Almost surely, 2^18274142357 is an apocalyptic number.

It is an amenable number.

18274142357 is a deficient number, since it is larger than the sum of its proper divisors (1).

18274142357 is an equidigital number, since it uses as much as digits as its factorization.

18274142357 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 376320, while the sum is 44.

The spelling of 18274142357 in words is "eighteen billion, two hundred seventy-four million, one hundred forty-two thousand, three hundred fifty-seven".