265343963 has 2 divisors, whose sum is σ = 265343964. Its totient is φ = 265343962.

The previous prime is 265343933. The next prime is 265343971. The reversal of 265343963 is 369343562.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 265343963 - 2²⁶ = 198235099 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 265343963.

It is not a weakly prime, because it can be changed into another prime (265343933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132671981 + 132671982.

It is an arithmetic number, because the mean of its divisors is an integer number (132671982).

Almost surely, 2^265343963 is an apocalyptic number.

265343963 is a deficient number, since it is larger than the sum of its proper divisors (1).

265343963 is an equidigital number, since it uses as much as digits as its factorization.

265343963 is an evil number, because the sum of its binary digits is even.

The product of its digits is 349920, while the sum is 41.

The square root of 265343963 is about 16289.3819096981. The cubic root of 265343963 is about 642.5936116990.

The spelling of 265343963 in words is "two hundred sixty-five million, three hundred forty-three thousand, nine hundred sixty-three".