133135749 has 6 divisors (see below), whose sum is σ = 192307206. Its totient is φ = 88757160.

The previous prime is 133135741. The next prime is 133135759. The reversal of 133135749 is 947531331.

It can be written as a sum of positive squares in only one way, i.e., 133056225 + 79524 = 11535^2 + 282^2 .

It is not a de Polignac number, because 133135749 - 2³ = 133135741 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133135741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7396422 + ... + 7396439.

It is an arithmetic number, because the mean of its divisors is an integer number (32051201).

Almost surely, 2^133135749 is an apocalyptic number.

It is an amenable number.

133135749 is a deficient number, since it is larger than the sum of its proper divisors (59171457).

133135749 is a wasteful number, since it uses less digits than its factorization.

133135749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14792867 (or 14792864 counting only the distinct ones).

The product of its digits is 34020, while the sum is 36.

The square root of 133135749 is about 11538.4465592210. The cubic root of 133135749 is about 510.6204789441.

The spelling of 133135749 in words is "one hundred thirty-three million, one hundred thirty-five thousand, seven hundred forty-nine".