133465881 has 8 divisors (see below), whose sum is σ = 183695104. Its totient is φ = 86106960.

The previous prime is 133465879. The next prime is 133465897. The reversal of 133465881 is 188564331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 133465881 - 2¹ = 133465879 is a prime.

It is a super-2 number, since 2×133465881² = 35626282782212322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133465831) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 717466 + ... + 717651.

It is an arithmetic number, because the mean of its divisors is an integer number (22961888).

Almost surely, 2^133465881 is an apocalyptic number.

It is an amenable number.

133465881 is a deficient number, since it is larger than the sum of its proper divisors (50229223).

133465881 is a wasteful number, since it uses less digits than its factorization.

133465881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1435151.

The product of its digits is 69120, while the sum is 39.

The square root of 133465881 is about 11552.7434404128. The cubic root of 133465881 is about 511.0421864087.

The spelling of 133465881 in words is "one hundred thirty-three million, four hundred sixty-five thousand, eight hundred eighty-one".