18397434150 has 192 divisors, whose sum is σ = 52390843200. Its totient is φ = 4743567360.

The previous prime is 18397434131. The next prime is 18397434151. The reversal of 18397434150 is 5143479381.

18397434150 is a `hidden beast` number, since 1 + 83 + 97 + 434 + 1 + 50 = 666.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 18397434096 and 18397434105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18397434151) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 8640286 + ... + 8642414.

It is an arithmetic number, because the mean of its divisors is an integer number (272868975).

Almost surely, 2^18397434150 is an apocalyptic number.

18397434150 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 18397434150, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26195421600).

18397434150 is an abundant number, since it is smaller than the sum of its proper divisors (33993409050).

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

18397434150 is a wasteful number, since it uses less digits than its factorization.

18397434150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2360 (or 2349 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The spelling of 18397434150 in words is "eighteen billion, three hundred ninety-seven million, four hundred thirty-four thousand, one hundred fifty".