181398598472 has 48 divisors (see below), whose sum is σ = 420912239040. Its totient is φ = 71762079168.

The previous prime is 181398598453. The next prime is 181398598477. The reversal of 181398598472 is 274895893181.

It is a junction number, because it is equal to n+sod(n) for n = 181398598399 and 181398598408.

It is not an unprimeable number, because it can be changed into a prime (181398598477) 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, 9574148 + ... + 9593075.

It is an arithmetic number, because the mean of its divisors is an integer number (8769004980).

Almost surely, 2^181398598472 is an apocalyptic number.

It is an amenable number.

181398598472 is an abundant number, since it is smaller than the sum of its proper divisors (239513640568).

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

181398598472 is a wasteful number, since it uses less digits than its factorization.

181398598472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19167262 (or 19167245 counting only the distinct ones).

The product of its digits is 34836480, while the sum is 65.

The spelling of 181398598472 in words is "one hundred eighty-one billion, three hundred ninety-eight million, five hundred ninety-eight thousand, four hundred seventy-two".