133778953 has 16 divisors (see below), whose sum is σ = 167086080. Its totient is φ = 104058000.

The previous prime is 133778951. The next prime is 133778959. The reversal of 133778953 is 359877331.

It is a cyclic number.

It is not a de Polignac number, because 133778953 - 2¹ = 133778951 is a prime.

It is not an unprimeable number, because it can be changed into a prime (133778951) 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, 55728 + ... + 58078.

It is an arithmetic number, because the mean of its divisors is an integer number (10442880).

Almost surely, 2^133778953 is an apocalyptic number.

It is an amenable number.

133778953 is a deficient number, since it is larger than the sum of its proper divisors (33307127).

133778953 is a wasteful number, since it uses less digits than its factorization.

133778953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3108.

The product of its digits is 476280, while the sum is 46.

The square root of 133778953 is about 11566.2851858321. The cubic root of 133778953 is about 511.4414596461.

The spelling of 133778953 in words is "one hundred thirty-three million, seven hundred seventy-eight thousand, nine hundred fifty-three".