18408753140 has 12 divisors (see below), whose sum is σ = 38658381636. Its totient is φ = 7363501248.

The previous prime is 18408753131. The next prime is 18408753149. The reversal of 18408753140 is 4135780481.

It is an interprime number because it is at equal distance from previous prime (18408753131) and next prime (18408753149).

It can be written as a sum of positive squares in 2 ways, for example, as 5450573584 + 12958179556 = 73828^2 + 113834^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18408753149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 460218809 + ... + 460218848.

It is an arithmetic number, because the mean of its divisors is an integer number (3221531803).

Almost surely, 2^18408753140 is an apocalyptic number.

18408753140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18408753140 is an abundant number, since it is smaller than the sum of its proper divisors (20249628496).

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

18408753140 is a wasteful number, since it uses less digits than its factorization.

18408753140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 920437666 (or 920437664 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 41.

The spelling of 18408753140 in words is "eighteen billion, four hundred eight million, seven hundred fifty-three thousand, one hundred forty".