133618230 has 48 divisors (see below), whose sum is σ = 351823680. Its totient is φ = 35178624.

The previous prime is 133618229. The next prime is 133618231. The reversal of 133618230 is 32816331.

It is a happy number.

133618230 is a `hidden beast` number, since 13 + 3 + 618 + 2 + 30 = 666.

It is an interprime number because it is at equal distance from previous prime (133618229) and next prime (133618231).

It is a junction number, because it is equal to n+sod(n) for n = 133618194 and 133618203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133618231) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2287 + ... + 16506.

It is an arithmetic number, because the mean of its divisors is an integer number (7329660).

Almost surely, 2^133618230 is an apocalyptic number.

133618230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

133618230 is an abundant number, since it is smaller than the sum of its proper divisors (218205450).

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

133618230 is a wasteful number, since it uses less digits than its factorization.

133618230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18885 (or 18882 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 133618230 is about 11559.3351884959. The cubic root of 133618230 is about 511.2365610813.

The spelling of 133618230 in words is "one hundred thirty-three million, six hundred eighteen thousand, two hundred thirty".