18345128630 has 16 divisors (see below), whose sum is σ = 33514086960. Its totient is φ = 7228528032.

The previous prime is 18345128629. The next prime is 18345128639. The reversal of 18345128630 is 3682154381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18345128639) 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 7 ways as a sum of consecutive naturals, for example, 13689725 + ... + 13691064.

It is an arithmetic number, because the mean of its divisors is an integer number (2094630435).

Almost surely, 2^18345128630 is an apocalyptic number.

18345128630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18345128630 is a deficient number, since it is larger than the sum of its proper divisors (15168958330).

18345128630 is a wasteful number, since it uses less digits than its factorization.

18345128630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27380863.

The product of its (nonzero) digits is 138240, while the sum is 41.

The spelling of 18345128630 in words is "eighteen billion, three hundred forty-five million, one hundred twenty-eight thousand, six hundred thirty".