133801369 has 4 divisors (see below), whose sum is σ = 144093796. Its totient is φ = 123508944.

The previous prime is 133801357. The next prime is 133801387. The reversal of 133801369 is 963108331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 963108331 = 3467 ⋅277793.

It can be written as a sum of positive squares in 2 ways, for example, as 47775744 + 86025625 = 6912^2 + 9275^2 .

It is not a de Polignac number, because 133801369 - 2¹¹ = 133799321 is a prime.

It is a super-2 number, since 2×133801369² = 35805612692548322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133801399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5146194 + ... + 5146219.

It is an arithmetic number, because the mean of its divisors is an integer number (36023449).

Almost surely, 2^133801369 is an apocalyptic number.

It is an amenable number.

133801369 is a deficient number, since it is larger than the sum of its proper divisors (10292427).

133801369 is a wasteful number, since it uses less digits than its factorization.

133801369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10292426.

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 133801369 is about 11567.2541685570. The cubic root of 133801369 is about 511.4700237594.

The spelling of 133801369 in words is "one hundred thirty-three million, eight hundred one thousand, three hundred sixty-nine".