260819863 has 2 divisors, whose sum is σ = 260819864. Its totient is φ = 260819862.

The previous prime is 260819857. The next prime is 260819879. The reversal of 260819863 is 368918062.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-260819863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (260819893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130409931 + 130409932.

It is an arithmetic number, because the mean of its divisors is an integer number (130409932).

Almost surely, 2^260819863 is an apocalyptic number.

260819863 is a deficient number, since it is larger than the sum of its proper divisors (1).

260819863 is an equidigital number, since it uses as much as digits as its factorization.

260819863 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 124416, while the sum is 43.

The square root of 260819863 is about 16149.9183589268. The cubic root of 260819863 is about 638.9205950821.

The spelling of 260819863 in words is "two hundred sixty million, eight hundred nineteen thousand, eight hundred sixty-three".