18301919100 has 72 divisors (see below), whose sum is σ = 55740599040. Its totient is φ = 4623641280.

The previous prime is 18301919089. The next prime is 18301919107. The reversal of 18301919100 is 191910381.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18301919107) 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 23 ways as a sum of consecutive naturals, for example, 1599732 + ... + 1611131.

Almost surely, 2^18301919100 is an apocalyptic number.

18301919100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18301919100 is an abundant number, since it is smaller than the sum of its proper divisors (37438679940).

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

18301919100 is a wasteful number, since it uses less digits than its factorization.

18301919100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3210899 (or 3210892 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 33.

The spelling of 18301919100 in words is "eighteen billion, three hundred one million, nine hundred nineteen thousand, one hundred".