18491180504 has 16 divisors (see below), whose sum is σ = 35109837600. Its totient is φ = 9128557152.

The previous prime is 18491180503. The next prime is 18491180507. The reversal of 18491180504 is 40508119481.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18491180503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14628467 + ... + 14629730.

It is an arithmetic number, because the mean of its divisors is an integer number (2194364850).

Almost surely, 2^18491180504 is an apocalyptic number.

It is an amenable number.

18491180504 is a deficient number, since it is larger than the sum of its proper divisors (16618657096).

18491180504 is a wasteful number, since it uses less digits than its factorization.

18491180504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29258282 (or 29258278 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 41.

Adding to 18491180504 its reverse (40508119481), we get a palindrome (58999299985).

The spelling of 18491180504 in words is "eighteen billion, four hundred ninety-one million, one hundred eighty thousand, five hundred four".