133690189 has 4 divisors (see below), whose sum is σ = 134988256. Its totient is φ = 132392124.

The previous prime is 133690177. The next prime is 133690241. The reversal of 133690189 is 981096331.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 981096331 = 19 ⋅51636649.

It is a cyclic number.

It is not a de Polignac number, because 133690189 - 2⁵ = 133690157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133690129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 648879 + ... + 649084.

It is an arithmetic number, because the mean of its divisors is an integer number (33747064).

Almost surely, 2^133690189 is an apocalyptic number.

It is an amenable number.

133690189 is a deficient number, since it is larger than the sum of its proper divisors (1298067).

133690189 is a wasteful number, since it uses less digits than its factorization.

133690189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1298066.

The product of its (nonzero) digits is 34992, while the sum is 40.

The square root of 133690189 is about 11562.4473620423. The cubic root of 133690189 is about 511.3283186948.

The spelling of 133690189 in words is "one hundred thirty-three million, six hundred ninety thousand, one hundred eighty-nine".