133748507 has 2 divisors, whose sum is σ = 133748508. Its totient is φ = 133748506.

The previous prime is 133748471. The next prime is 133748561. The reversal of 133748507 is 705847331.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 133748507 - 2⁶ = 133748443 is a prime.

It is not a weakly prime, because it can be changed into another prime (133748567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66874253 + 66874254.

It is an arithmetic number, because the mean of its divisors is an integer number (66874254).

Almost surely, 2^133748507 is an apocalyptic number.

133748507 is a deficient number, since it is larger than the sum of its proper divisors (1).

133748507 is an equidigital number, since it uses as much as digits as its factorization.

133748507 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 70560, while the sum is 38.

The square root of 133748507 is about 11564.9689580215. The cubic root of 133748507 is about 511.4026580067.

The spelling of 133748507 in words is "one hundred thirty-three million, seven hundred forty-eight thousand, five hundred seven".