18453184540 has 48 divisors (see below), whose sum is σ = 44295358464. Its totient is φ = 6325704000.

The previous prime is 18453184513. The next prime is 18453184549. The reversal of 18453184540 is 4548135481.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18453184549) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1591765 + ... + 1603315.

It is an arithmetic number, because the mean of its divisors is an integer number (922819968).

Almost surely, 2^18453184540 is an apocalyptic number.

18453184540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18453184540 is an abundant number, since it is smaller than the sum of its proper divisors (25842173924).

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

18453184540 is a wasteful number, since it uses less digits than its factorization.

18453184540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22978 (or 22976 counting only the distinct ones).

The product of its (nonzero) digits is 307200, while the sum is 43.

The spelling of 18453184540 in words is "eighteen billion, four hundred fifty-three million, one hundred eighty-four thousand, five hundred forty".