18428608045 has 8 divisors (see below), whose sum is σ = 22653703800. Its totient is φ = 14383303680.

The previous prime is 18428608027. The next prime is 18428608049. The reversal of 18428608045 is 54080682481.

It can be written as a sum of positive squares in 4 ways, for example, as 1860541956 + 16568066089 = 43134^2 + 128717^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 18428608045 - 2⁵ = 18428608013 is a prime.

It is a super-2 number, since 2×18428608045² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18428607986 and 18428608004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18428608049) 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, 44947620 + ... + 44948029.

It is an arithmetic number, because the mean of its divisors is an integer number (2831712975).

Almost surely, 2^18428608045 is an apocalyptic number.

It is an amenable number.

18428608045 is a deficient number, since it is larger than the sum of its proper divisors (4225095755).

18428608045 is an equidigital number, since it uses as much as digits as its factorization.

18428608045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89895695.

The product of its (nonzero) digits is 491520, while the sum is 46.

The spelling of 18428608045 in words is "eighteen billion, four hundred twenty-eight million, six hundred eight thousand, forty-five".