18585050929 has 3 divisors (see below), whose sum is σ = 18585187257. Its totient is φ = 18584914602.

The previous prime is 18585050899. The next prime is 18585050969. The reversal of 18585050929 is 92905058581.

The square root of 18585050929 is 136327.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 92905058581 = 233 ⋅398734157.

It is not a de Polignac number, because 18585050929 - 2¹⁹ = 18584526641 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18585050969) 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 2 ways as a sum of consecutive naturals, for example, 68164 + ... + 204490.

It is an arithmetic number, because the mean of its divisors is an integer number (6195062419).

Almost surely, 2^18585050929 is an apocalyptic number.

18585050929 is the 136327-th square number.

18585050929 is the 68164-th centered octagonal number.

It is an amenable number.

18585050929 is a deficient number, since it is larger than the sum of its proper divisors (136328).

18585050929 is an frugal number, since it uses more digits than its factorization.

18585050929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272654 (or 136327 counting only the distinct ones).

The product of its (nonzero) digits is 1296000, while the sum is 52.

The spelling of 18585050929 in words is "eighteen billion, five hundred eighty-five million, fifty thousand, nine hundred twenty-nine".