18140404752 has 30 divisors (see below), whose sum is σ = 50767938702. Its totient is φ = 6046801536.

The previous prime is 18140404741. The next prime is 18140404759. The reversal of 18140404752 is 25740404181.

It is a happy number.

18140404752 is a `hidden beast` number, since 1 + 8 + 140 + 40 + 475 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 10856806416 + 7283598336 = 104196^2 + 85344^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (18140404759) 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 5 ways as a sum of consecutive naturals, for example, 62987373 + ... + 62987660.

Almost surely, 2^18140404752 is an apocalyptic number.

18140404752 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18140404752 is an abundant number, since it is smaller than the sum of its proper divisors (32627533950).

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

18140404752 is a wasteful number, since it uses less digits than its factorization.

18140404752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125975047 (or 125975038 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 36.

The spelling of 18140404752 in words is "eighteen billion, one hundred forty million, four hundred four thousand, seven hundred fifty-two".