18540537230 has 32 divisors (see below), whose sum is σ = 34602638400. Its totient is φ = 7144123392.

The previous prime is 18540537209. The next prime is 18540537233. The reversal of 18540537230 is 3273504581.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18540537233) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54494 + ... + 200126.

It is an arithmetic number, because the mean of its divisors is an integer number (1081332450).

Almost surely, 2^18540537230 is an apocalyptic number.

18540537230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18540537230 is a deficient number, since it is larger than the sum of its proper divisors (16062101170).

18540537230 is a wasteful number, since it uses less digits than its factorization.

18540537230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146108.

The product of its (nonzero) digits is 100800, while the sum is 38.

The spelling of 18540537230 in words is "eighteen billion, five hundred forty million, five hundred thirty-seven thousand, two hundred thirty".