18405734030 has 16 divisors (see below), whose sum is σ = 33145691184. Its totient is φ = 7358878080.

The previous prime is 18405734023. The next prime is 18405734033. The reversal of 18405734030 is 3043750481.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18405734033) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 404252 + ... + 447471.

It is an arithmetic number, because the mean of its divisors is an integer number (2071605699).

Almost surely, 2^18405734030 is an apocalyptic number.

18405734030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18405734030 is a deficient number, since it is larger than the sum of its proper divisors (14739957154).

18405734030 is a wasteful number, since it uses less digits than its factorization.

18405734030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 853891.

The product of its (nonzero) digits is 40320, while the sum is 35.

The spelling of 18405734030 in words is "eighteen billion, four hundred five million, seven hundred thirty-four thousand, thirty".