18530227149 has 12 divisors (see below), whose sum is σ = 28740760704. Its totient is φ = 10588701144.

The previous prime is 18530227141. The next prime is 18530227213. The reversal of 18530227149 is 94172203581.

It is not a de Polignac number, because 18530227149 - 2³ = 18530227141 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18530227149.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18530227141) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 63027837 + ... + 63028130.

It is an arithmetic number, because the mean of its divisors is an integer number (2395063392).

Almost surely, 2^18530227149 is an apocalyptic number.

It is an amenable number.

18530227149 is a deficient number, since it is larger than the sum of its proper divisors (10210533555).

18530227149 is a wasteful number, since it uses less digits than its factorization.

18530227149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126055984 (or 126055977 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 42.

The spelling of 18530227149 in words is "eighteen billion, five hundred thirty million, two hundred twenty-seven thousand, one hundred forty-nine".