13628254018 has 4 divisors (see below), whose sum is σ = 20442381030. Its totient is φ = 6814127008.

The previous prime is 13628253971. The next prime is 13628254019. The reversal of 13628254018 is 81045282631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 81045282631 = 5119 ⋅15832249.

It can be written as a sum of positive squares in only one way, i.e., 7397204049 + 6231049969 = 86007^2 + 78937^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (13628254019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3407063503 + ... + 3407063506.

Almost surely, 2^13628254018 is an apocalyptic number.

13628254018 is a deficient number, since it is larger than the sum of its proper divisors (6814127012).

13628254018 is an equidigital number, since it uses as much as digits as its factorization.

13628254018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6814127011.

The product of its (nonzero) digits is 92160, while the sum is 40.

The spelling of 13628254018 in words is "thirteen billion, six hundred twenty-eight million, two hundred fifty-four thousand, eighteen".