133773783 has 16 divisors (see below), whose sum is σ = 209548416. Its totient is φ = 74838240.

The previous prime is 133773763. The next prime is 133773791. The reversal of 133773783 is 387377331.

It is not a de Polignac number, because 133773783 - 2⁵ = 133773751 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133773733) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 155485 + ... + 156342.

It is an arithmetic number, because the mean of its divisors is an integer number (13096776).

Almost surely, 2^133773783 is an apocalyptic number.

133773783 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

133773783 is a deficient number, since it is larger than the sum of its proper divisors (75774633).

133773783 is a wasteful number, since it uses less digits than its factorization.

133773783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311854.

The product of its digits is 222264, while the sum is 42.

The square root of 133773783 is about 11566.0616892700. The cubic root of 133773783 is about 511.4348711997.

The spelling of 133773783 in words is "one hundred thirty-three million, seven hundred seventy-three thousand, seven hundred eighty-three".