18249699700 has 36 divisors (see below), whose sum is σ = 40078997280. Its totient is φ = 7211926240.

The previous prime is 18249699691. The next prime is 18249699737. The reversal of 18249699700 is 799694281.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 1091080 + ... + 1107679.

It is an arithmetic number, because the mean of its divisors is an integer number (1113305480).

Almost surely, 2^18249699700 is an apocalyptic number.

18249699700 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18249699700 is an abundant number, since it is smaller than the sum of its proper divisors (21829297580).

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

18249699700 is a wasteful number, since it uses less digits than its factorization.

18249699700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2198856 (or 2198849 counting only the distinct ones).

The product of its (nonzero) digits is 1959552, while the sum is 55.

The spelling of 18249699700 in words is "eighteen billion, two hundred forty-nine million, six hundred ninety-nine thousand, seven hundred".