18497427300 has 486 divisors, whose sum is σ = 66460937634. Its totient is φ = 4464979200.

The previous prime is 18497427217. The next prime is 18497427307. The reversal of 18497427300 is 372479481.

It can be written as a sum of positive squares in 3 ways, for example, as 155600676 + 18341826624 = 12474^2 + 135432^2 .

It is a tau number, because it is divible by the number of its divisors (486).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (18497427307) by changing a digit.

It is a polite number, since it can be written in 161 ways as a sum of consecutive naturals, for example, 79387984 + ... + 79388216.

Almost surely, 2^18497427300 is an apocalyptic number.

18497427300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18497427300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33230468817).

18497427300 is an abundant number, since it is smaller than the sum of its proper divisors (47963510334).

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

18497427300 is a wasteful number, since it uses less digits than its factorization.

18497427300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293 (or 254 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 45.

The spelling of 18497427300 in words is "eighteen billion, four hundred ninety-seven million, four hundred twenty-seven thousand, three hundred".