133448873 has 2 divisors, whose sum is σ = 133448874. Its totient is φ = 133448872.

The previous prime is 133448869. The next prime is 133448911. The reversal of 133448873 is 378844331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 133448704 + 169 = 11552^2 + 13^2 .

It is a cyclic number.

It is not a de Polignac number, because 133448873 - 2² = 133448869 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 133448873.

It is not a weakly prime, because it can be changed into another prime (133448813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66724436 + 66724437.

It is an arithmetic number, because the mean of its divisors is an integer number (66724437).

Almost surely, 2^133448873 is an apocalyptic number.

It is an amenable number.

133448873 is a deficient number, since it is larger than the sum of its proper divisors (1).

133448873 is an equidigital number, since it uses as much as digits as its factorization.

133448873 is an evil number, because the sum of its binary digits is even.

The product of its digits is 193536, while the sum is 41.

The square root of 133448873 is about 11552.0073147484. The cubic root of 133448873 is about 511.0204775528.

The spelling of 133448873 in words is "one hundred thirty-three million, four hundred forty-eight thousand, eight hundred seventy-three".