18483140257 has 4 divisors (see below), whose sum is σ = 18585257236. Its totient is φ = 18381023280.

The previous prime is 18483140243. The next prime is 18483140281. The reversal of 18483140257 is 75204138481.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3025440016 + 15457700241 = 55004^2 + 124329^2 .

It is a cyclic number.

It is not a de Polignac number, because 18483140257 - 2¹⁹ = 18482615969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18483140297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51058218 + ... + 51058579.

It is an arithmetic number, because the mean of its divisors is an integer number (4646314309).

Almost surely, 2^18483140257 is an apocalyptic number.

It is an amenable number.

18483140257 is a deficient number, since it is larger than the sum of its proper divisors (102116979).

18483140257 is a wasteful number, since it uses less digits than its factorization.

18483140257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102116978.

The product of its (nonzero) digits is 215040, while the sum is 43.

The spelling of 18483140257 in words is "eighteen billion, four hundred eighty-three million, one hundred forty thousand, two hundred fifty-seven".