133432649 has 16 divisors (see below), whose sum is σ = 165703680. Its totient is φ = 104852880.

The previous prime is 133432639. The next prime is 133432667. The reversal of 133432649 is 946234331.

It is a cyclic number.

It is not a de Polignac number, because 133432649 - 2¹² = 133428553 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (133432639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12059 + ... + 20304.

It is an arithmetic number, because the mean of its divisors is an integer number (10356480).

Almost surely, 2^133432649 is an apocalyptic number.

133432649 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

133432649 is a deficient number, since it is larger than the sum of its proper divisors (32271031).

133432649 is a wasteful number, since it uses less digits than its factorization.

133432649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32420.

The product of its digits is 46656, while the sum is 35.

The square root of 133432649 is about 11551.3050777823. The cubic root of 133432649 is about 510.9997676683. Note that the first 3 decimals are identical.

The spelling of 133432649 in words is "one hundred thirty-three million, four hundred thirty-two thousand, six hundred forty-nine".