133438065 has 16 divisors (see below), whose sum is σ = 222784128. Its totient is φ = 68072576.

The previous prime is 133438037. The next prime is 133438079. The reversal of 133438065 is 560834331.

It is a cyclic number.

It is not a de Polignac number, because 133438065 - 2¹⁴ = 133421681 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 193044 + ... + 193733.

It is an arithmetic number, because the mean of its divisors is an integer number (13924008).

Almost surely, 2^133438065 is an apocalyptic number.

133438065 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

133438065 is a deficient number, since it is larger than the sum of its proper divisors (89346063).

133438065 is a wasteful number, since it uses less digits than its factorization.

133438065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386808.

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 133438065 is about 11551.5395077886. The cubic root of 133438065 is about 511.0066813617.

The spelling of 133438065 in words is "one hundred thirty-three million, four hundred thirty-eight thousand, sixty-five".