133768946 has 4 divisors (see below), whose sum is σ = 200653422. Its totient is φ = 66884472.

The previous prime is 133768933. The next prime is 133768969. The reversal of 133768946 is 649867331.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 649867331 = 71 ⋅9153061.

It can be written as a sum of positive squares in only one way, i.e., 133656721 + 112225 = 11561^2 + 335^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 133768946.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33442235 + ... + 33442238.

Almost surely, 2^133768946 is an apocalyptic number.

133768946 is a deficient number, since it is larger than the sum of its proper divisors (66884476).

133768946 is an equidigital number, since it uses as much as digits as its factorization.

133768946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66884475.

The product of its digits is 653184, while the sum is 47.

The square root of 133768946 is about 11565.8525842240. The cubic root of 133768946 is about 511.4287069617.

It can be divided in two parts, 13376 and 8946, that added together give a palindrome (22322).

The spelling of 133768946 in words is "one hundred thirty-three million, seven hundred sixty-eight thousand, nine hundred forty-six".