265194973 has 2 divisors, whose sum is σ = 265194974. Its totient is φ = 265194972.

The previous prime is 265194971. The next prime is 265195081. The reversal of 265194973 is 379491562.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 242518329 + 22676644 = 15573^2 + 4762^2 .

It is a cyclic number.

It is not a de Polignac number, because 265194973 - 2¹ = 265194971 is a prime.

Together with 265194971, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (265194971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132597486 + 132597487.

It is an arithmetic number, because the mean of its divisors is an integer number (132597487).

Almost surely, 2^265194973 is an apocalyptic number.

It is an amenable number.

265194973 is a deficient number, since it is larger than the sum of its proper divisors (1).

265194973 is an equidigital number, since it uses as much as digits as its factorization.

265194973 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 408240, while the sum is 46.

The square root of 265194973 is about 16284.8080430811. The cubic root of 265194973 is about 642.4733175897.

The spelling of 265194973 in words is "two hundred sixty-five million, one hundred ninety-four thousand, nine hundred seventy-three".