133838149 has 2 divisors, whose sum is σ = 133838150. Its totient is φ = 133838148.

The previous prime is 133838143. The next prime is 133838153. The reversal of 133838149 is 941838331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 104407524 + 29430625 = 10218^2 + 5425^2 .

It is a cyclic number.

It is not a de Polignac number, because 133838149 - 2³ = 133838141 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 (133838141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66919074 + 66919075.

It is an arithmetic number, because the mean of its divisors is an integer number (66919075).

Almost surely, 2^133838149 is an apocalyptic number.

It is an amenable number.

133838149 is a deficient number, since it is larger than the sum of its proper divisors (1).

133838149 is an equidigital number, since it uses as much as digits as its factorization.

133838149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 62208, while the sum is 40.

The square root of 133838149 is about 11568.8438921095. The cubic root of 133838149 is about 511.5168846253.

The spelling of 133838149 in words is "one hundred thirty-three million, eight hundred thirty-eight thousand, one hundred forty-nine".