18579432945 has 16 divisors (see below), whose sum is σ = 29728785600. Its totient is φ = 9908466624.

The previous prime is 18579432943. The next prime is 18579432973. The reversal of 18579432945 is 54923497581.

It is not a de Polignac number, because 18579432945 - 2¹ = 18579432943 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18579432943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 476031 + ... + 513579.

It is an arithmetic number, because the mean of its divisors is an integer number (1858049100).

Almost surely, 2^18579432945 is an apocalyptic number.

18579432945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18579432945 is a deficient number, since it is larger than the sum of its proper divisors (11149352655).

18579432945 is a wasteful number, since it uses less digits than its factorization.

18579432945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70544.

The product of its digits is 10886400, while the sum is 57.

The spelling of 18579432945 in words is "eighteen billion, five hundred seventy-nine million, four hundred thirty-two thousand, nine hundred forty-five".