133788154 has 4 divisors (see below), whose sum is σ = 200682234. Its totient is φ = 66894076.

The previous prime is 133788091. The next prime is 133788163. The reversal of 133788154 is 451887331.

133788154 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 85137529 + 48650625 = 9227^2 + 6975^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 33447037 + ... + 33447040.

Almost surely, 2^133788154 is an apocalyptic number.

133788154 is a deficient number, since it is larger than the sum of its proper divisors (66894080).

133788154 is an equidigital number, since it uses as much as digits as its factorization.

133788154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66894079.

The product of its digits is 80640, while the sum is 40.

The square root of 133788154 is about 11566.6829298637. The cubic root of 133788154 is about 511.4531846220.

The spelling of 133788154 in words is "one hundred thirty-three million, seven hundred eighty-eight thousand, one hundred fifty-four".