133375869 has 16 divisors (see below), whose sum is σ = 215557440. Its totient is φ = 80833680.

The previous prime is 133375867. The next prime is 133375871. The reversal of 133375869 is 968573331.

133375869 is a `hidden beast` number, since 1 + 33 + 37 + 586 + 9 = 666.

It is an interprime number because it is at equal distance from previous prime (133375867) and next prime (133375871).

It is not a de Polignac number, because 133375869 - 2¹ = 133375867 is a prime.

It is a super-2 number, since 2×133375869² = 35578244863010322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133375867) 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, 224242 + ... + 224835.

It is an arithmetic number, because the mean of its divisors is an integer number (13472340).

Almost surely, 2^133375869 is an apocalyptic number.

It is an amenable number.

133375869 is a deficient number, since it is larger than the sum of its proper divisors (82181571).

133375869 is a wasteful number, since it uses less digits than its factorization.

133375869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449097 (or 449091 counting only the distinct ones).

The product of its digits is 408240, while the sum is 45.

The square root of 133375869 is about 11548.8470853155. The cubic root of 133375869 is about 510.9272749574.

The spelling of 133375869 in words is "one hundred thirty-three million, three hundred seventy-five thousand, eight hundred sixty-nine".