18195336120 has 128 divisors (see below), whose sum is σ = 59030072640. Its totient is φ = 4460175360.

The previous prime is 18195336097. The next prime is 18195336121. The reversal of 18195336120 is 2163359181.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18195336121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 351762 + ... + 400158.

Almost surely, 2^18195336120 is an apocalyptic number.

18195336120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18195336120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29515036320).

18195336120 is an abundant number, since it is smaller than the sum of its proper divisors (40834736520).

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

18195336120 is a wasteful number, since it uses less digits than its factorization.

18195336120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48665 (or 48661 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 39.

The spelling of 18195336120 in words is "eighteen billion, one hundred ninety-five million, three hundred thirty-six thousand, one hundred twenty".