18455743120 has 80 divisors (see below), whose sum is σ = 43161433920. Its totient is φ = 7339110912.

The previous prime is 18455743093. The next prime is 18455743129. The reversal of 18455743120 is 2134755481.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×18455743120² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (18455743129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14919142 + ... + 14920378.

It is an arithmetic number, because the mean of its divisors is an integer number (539517924).

Almost surely, 2^18455743120 is an apocalyptic number.

18455743120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18455743120 is an abundant number, since it is smaller than the sum of its proper divisors (24705690800).

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

18455743120 is a wasteful number, since it uses less digits than its factorization.

18455743120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2192 (or 2186 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 40.

The spelling of 18455743120 in words is "eighteen billion, four hundred fifty-five million, seven hundred forty-three thousand, one hundred twenty".