18288773230 has 96 divisors (see below), whose sum is σ = 43666330176. Its totient is φ = 5447586816.

The previous prime is 18288773227. The next prime is 18288773231. The reversal of 18288773230 is 3237788281.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18288773231) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 23847 + ... + 192733.

It is an arithmetic number, because the mean of its divisors is an integer number (454857606).

Almost surely, 2^18288773230 is an apocalyptic number.

18288773230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18288773230 is an abundant number, since it is smaller than the sum of its proper divisors (25377556946).

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

18288773230 is a wasteful number, since it uses less digits than its factorization.

18288773230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168938 (or 168931 counting only the distinct ones).

The product of its (nonzero) digits is 903168, while the sum is 49.

The spelling of 18288773230 in words is "eighteen billion, two hundred eighty-eight million, seven hundred seventy-three thousand, two hundred thirty".