133448783 has 16 divisors (see below), whose sum is σ = 151151616. Its totient is φ = 116893920.

The previous prime is 133448779. The next prime is 133448789. The reversal of 133448783 is 387844331.

It is not a de Polignac number, because 133448783 - 2² = 133448779 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 133448783.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133448789) 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, 37466 + ... + 40872.

It is an arithmetic number, because the mean of its divisors is an integer number (9446976).

Almost surely, 2^133448783 is an apocalyptic number.

133448783 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

133448783 is a deficient number, since it is larger than the sum of its proper divisors (17702833).

133448783 is a wasteful number, since it uses less digits than its factorization.

133448783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3574.

The product of its digits is 193536, while the sum is 41.

The square root of 133448783 is about 11552.0034193208. The cubic root of 133448783 is about 511.0203626727.

The spelling of 133448783 in words is "one hundred thirty-three million, four hundred forty-eight thousand, seven hundred eighty-three".