18150471900 has 324 divisors, whose sum is σ = 64860364296. Its totient is φ = 4399401600.

The previous prime is 18150471851. The next prime is 18150471901. The reversal of 18150471900 is 917405181.

18150471900 is a `hidden beast` number, since 1 + 81 + 504 + 71 + 9 + 0 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (324).

It is a super-2 number, since 2×18150471900² (a number of 21 digits) contains 22 as substring.

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 (18150471901) by changing a digit.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 2937214 + ... + 2943386.

Almost surely, 2^18150471900 is an apocalyptic number.

18150471900 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 18150471900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32430182148).

18150471900 is an abundant number, since it is smaller than the sum of its proper divisors (46709892396).

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

18150471900 is a wasteful number, since it uses less digits than its factorization.

18150471900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6224 (or 6194 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 36.

The spelling of 18150471900 in words is "eighteen billion, one hundred fifty million, four hundred seventy-one thousand, nine hundred".