18229931100 has 108 divisors (see below), whose sum is σ = 59625152496. Its totient is φ = 4649948160.

The previous prime is 18229931099. The next prime is 18229931101. The reversal of 18229931100 is 113992281.

It is an interprime number because it is at equal distance from previous prime (18229931099) and next prime (18229931101).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18229931101) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 419637 + ... + 461036.

Almost surely, 2^18229931100 is an apocalyptic number.

18229931100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18229931100 is an abundant number, since it is smaller than the sum of its proper divisors (41395221396).

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

18229931100 is a wasteful number, since it uses less digits than its factorization.

18229931100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 880716 (or 880706 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 36.

The spelling of 18229931100 in words is "eighteen billion, two hundred twenty-nine million, nine hundred thirty-one thousand, one hundred".