133430166 has 20 divisors (see below), whose sum is σ = 298982772. Its totient is φ = 44476668.

The previous prime is 133430159. The next prime is 133430173. The reversal of 133430166 is 661034331.

It is an interprime number because it is at equal distance from previous prime (133430159) and next prime (133430173).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 411660 + ... + 411983.

Almost surely, 2^133430166 is an apocalyptic number.

133430166 is an abundant number, since it is smaller than the sum of its proper divisors (165552606).

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

133430166 is an equidigital number, since it uses as much as digits as its factorization.

133430166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 823657 (or 823648 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

The square root of 133430166 is about 11551.1976002491. The cubic root of 133430166 is about 510.9965979785.

Adding to 133430166 its reverse (661034331), we get a palindrome (794464497).

The spelling of 133430166 in words is "one hundred thirty-three million, four hundred thirty thousand, one hundred sixty-six".