133816265 has 32 divisors (see below), whose sum is σ = 186810624. Its totient is φ = 90941440.

The previous prime is 133816247. The next prime is 133816271. The reversal of 133816265 is 562618331.

It is not a de Polignac number, because 133816265 - 2⁸ = 133816009 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 155717 + ... + 156573.

It is an arithmetic number, because the mean of its divisors is an integer number (5837832).

Almost surely, 2^133816265 is an apocalyptic number.

It is an amenable number.

133816265 is a deficient number, since it is larger than the sum of its proper divisors (52994359).

133816265 is a wasteful number, since it uses less digits than its factorization.

133816265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1057.

The product of its digits is 25920, while the sum is 35.

The square root of 133816265 is about 11567.8980372408. The cubic root of 133816265 is about 511.4890035721.

The spelling of 133816265 in words is "one hundred thirty-three million, eight hundred sixteen thousand, two hundred sixty-five".