18692343220 has 12 divisors (see below), whose sum is σ = 39253920804. Its totient is φ = 7476937280.

The previous prime is 18692343191. The next prime is 18692343223. The reversal of 18692343220 is 2234329681.

It can be written as a sum of positive squares in 2 ways, for example, as 9209089296 + 9483253924 = 95964^2 + 97382^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18692343223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 467308561 + ... + 467308600.

It is an arithmetic number, because the mean of its divisors is an integer number (3271160067).

Almost surely, 2^18692343220 is an apocalyptic number.

18692343220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18692343220 is an abundant number, since it is smaller than the sum of its proper divisors (20561577584).

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

18692343220 is a wasteful number, since it uses less digits than its factorization.

18692343220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 934617170 (or 934617168 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 40.

The spelling of 18692343220 in words is "eighteen billion, six hundred ninety-two million, three hundred forty-three thousand, two hundred twenty".