18190000227 has 64 divisors (see below), whose sum is σ = 29483827200. Its totient is φ = 9744261120.

The previous prime is 18190000163. The next prime is 18190000243. The reversal of 18190000227 is 72200009181.

It is not a de Polignac number, because 18190000227 - 2⁶ = 18190000163 is a prime.

It is a super-2 number, since 2×18190000227² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18190000194 and 18190000203.

It is not an unprimeable number, because it can be changed into a prime (18191000227) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 18354702 + ... + 18355692.

It is an arithmetic number, because the mean of its divisors is an integer number (460684800).

Almost surely, 2^18190000227 is an apocalyptic number.

18190000227 is a deficient number, since it is larger than the sum of its proper divisors (11293826973).

18190000227 is a wasteful number, since it uses less digits than its factorization.

18190000227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1456.

The product of its (nonzero) digits is 2016, while the sum is 30.

The spelling of 18190000227 in words is "eighteen billion, one hundred ninety million, two hundred twenty-seven", and thus it is an aban number.