133180465 has 48 divisors (see below), whose sum is σ = 194431104. Its totient is φ = 87042560.

The previous prime is 133180447. The next prime is 133180517. The reversal of 133180465 is 564081331.

It is not a de Polignac number, because 133180465 - 2⁷ = 133180337 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 236274 + ... + 236836.

It is an arithmetic number, because the mean of its divisors is an integer number (4050648).

Almost surely, 2^133180465 is an apocalyptic number.

It is an amenable number.

133180465 is a deficient number, since it is larger than the sum of its proper divisors (61250639).

133180465 is a wasteful number, since it uses less digits than its factorization.

133180465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 630 (or 619 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 133180465 is about 11540.3840923948. The cubic root of 133180465 is about 510.6776395232.

It can be divided in two parts, 1331 and 80465, that added together give a square (81796 = 286²).

The spelling of 133180465 in words is "one hundred thirty-three million, one hundred eighty thousand, four hundred sixty-five".