133162109 has 2 divisors, whose sum is σ = 133162110. Its totient is φ = 133162108.

The previous prime is 133162097. The next prime is 133162151. The reversal of 133162109 is 901261331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 116532025 + 16630084 = 10795^2 + 4078^2 .

It is a cyclic number.

It is not a de Polignac number, because 133162109 - 2²⁴ = 116384893 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133162189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66581054 + 66581055.

It is an arithmetic number, because the mean of its divisors is an integer number (66581055).

Almost surely, 2^133162109 is an apocalyptic number.

It is an amenable number.

133162109 is a deficient number, since it is larger than the sum of its proper divisors (1).

133162109 is an equidigital number, since it uses as much as digits as its factorization.

133162109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972, while the sum is 26.

The square root of 133162109 is about 11539.5887708358. The cubic root of 133162109 is about 510.6541765490.

The spelling of 133162109 in words is "one hundred thirty-three million, one hundred sixty-two thousand, one hundred nine".