18145730430 has 32 divisors (see below), whose sum is σ = 48388615200. Its totient is φ = 4838861376.

The previous prime is 18145730411. The next prime is 18145730467. The reversal of 18145730430 is 3403754181.

It is a happy number.

18145730430 is a `hidden beast` number, since 1 + 81 + 4 + 573 + 0 + 4 + 3 + 0 = 666.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33602935 + ... + 33603474.

It is an arithmetic number, because the mean of its divisors is an integer number (1512144225).

Almost surely, 2^18145730430 is an apocalyptic number.

18145730430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18145730430 is an abundant number, since it is smaller than the sum of its proper divisors (30242884770).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18145730430 is a wasteful number, since it uses less digits than its factorization.

18145730430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67206425 (or 67206419 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The spelling of 18145730430 in words is "eighteen billion, one hundred forty-five million, seven hundred thirty thousand, four hundred thirty".