133749673 has 2 divisors, whose sum is σ = 133749674. Its totient is φ = 133749672.

The previous prime is 133749641. The next prime is 133749677. The reversal of 133749673 is 376947331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 132434064 + 1315609 = 11508^2 + 1147^2 .

It is a cyclic number.

It is not a de Polignac number, because 133749673 - 2⁵ = 133749641 is a prime.

It is not a weakly prime, because it can be changed into another prime (133749677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66874836 + 66874837.

It is an arithmetic number, because the mean of its divisors is an integer number (66874837).

Almost surely, 2^133749673 is an apocalyptic number.

It is an amenable number.

133749673 is a deficient number, since it is larger than the sum of its proper divisors (1).

133749673 is an equidigital number, since it uses as much as digits as its factorization.

133749673 is an evil number, because the sum of its binary digits is even.

The product of its digits is 285768, while the sum is 43.

The square root of 133749673 is about 11565.0193687689. The cubic root of 133749673 is about 511.4041441137.

The spelling of 133749673 in words is "one hundred thirty-three million, seven hundred forty-nine thousand, six hundred seventy-three".