133189937 has 2 divisors, whose sum is σ = 133189938. Its totient is φ = 133189936.

The previous prime is 133189933. The next prime is 133189949. The reversal of 133189937 is 739981331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 106523041 + 26666896 = 10321^2 + 5164^2 .

It is a cyclic number.

It is not a de Polignac number, because 133189937 - 2² = 133189933 is a prime.

It is not a weakly prime, because it can be changed into another prime (133189933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66594968 + 66594969.

It is an arithmetic number, because the mean of its divisors is an integer number (66594969).

Almost surely, 2^133189937 is an apocalyptic number.

It is an amenable number.

133189937 is a deficient number, since it is larger than the sum of its proper divisors (1).

133189937 is an equidigital number, since it uses as much as digits as its factorization.

133189937 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 122472, while the sum is 44.

The square root of 133189937 is about 11540.7944700527. The cubic root of 133189937 is about 510.6897459633.

The spelling of 133189937 in words is "one hundred thirty-three million, one hundred eighty-nine thousand, nine hundred thirty-seven".