18147428552 has 32 divisors (see below), whose sum is σ = 37466673120. Its totient is φ = 8171735040.

The previous prime is 18147428543. The next prime is 18147428597. The reversal of 18147428552 is 25582474181.

It is a junction number, because it is equal to n+sod(n) for n = 18147428497 and 18147428506.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 954233 + ... + 973064.

It is an arithmetic number, because the mean of its divisors is an integer number (1170833535).

Almost surely, 2^18147428552 is an apocalyptic number.

It is an amenable number.

18147428552 is an abundant number, since it is smaller than the sum of its proper divisors (19319244568).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18147428552 is a wasteful number, since it uses less digits than its factorization.

18147428552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1927421 (or 1927417 counting only the distinct ones).

The product of its digits is 716800, while the sum is 47.

The spelling of 18147428552 in words is "eighteen billion, one hundred forty-seven million, four hundred twenty-eight thousand, five hundred fifty-two".