18546241129 has 4 divisors (see below), whose sum is σ = 19972875076. Its totient is φ = 17119607184.

The previous prime is 18546241121. The next prime is 18546241141. The reversal of 18546241129 is 92114264581.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 92114264581 = 44809 ⋅2055709.

It can be written as a sum of positive squares in 2 ways, for example, as 9335424400 + 9210816729 = 96620^2 + 95973^2 .

It is a cyclic number.

It is not a de Polignac number, because 18546241129 - 2³ = 18546241121 is a prime.

It is a super-2 number, since 2×18546241129² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18546241121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 713316954 + ... + 713316979.

It is an arithmetic number, because the mean of its divisors is an integer number (4993218769).

Almost surely, 2^18546241129 is an apocalyptic number.

It is an amenable number.

18546241129 is a deficient number, since it is larger than the sum of its proper divisors (1426633947).

18546241129 is a wasteful number, since it uses less digits than its factorization.

18546241129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1426633946.

The product of its digits is 138240, while the sum is 43.

The spelling of 18546241129 in words is "eighteen billion, five hundred forty-six million, two hundred forty-one thousand, one hundred twenty-nine".