133826749 has 16 divisors (see below), whose sum is σ = 156857472. Its totient is φ = 111803328.

The previous prime is 133826731. The next prime is 133826773. The reversal of 133826749 is 947628331.

It is not a de Polignac number, because 133826749 - 2¹⁷ = 133695677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133821749) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59367 + ... + 61579.

It is an arithmetic number, because the mean of its divisors is an integer number (9803592).

Almost surely, 2^133826749 is an apocalyptic number.

It is an amenable number.

133826749 is a deficient number, since it is larger than the sum of its proper divisors (23030723).

133826749 is a wasteful number, since it uses less digits than its factorization.

133826749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2436.

The product of its digits is 217728, while the sum is 43.

The square root of 133826749 is about 11568.3511789710. The cubic root of 133826749 is about 511.5023609684.

The spelling of 133826749 in words is "one hundred thirty-three million, eight hundred twenty-six thousand, seven hundred forty-nine".