263683913 has 2 divisors, whose sum is σ = 263683914. Its totient is φ = 263683912.

The previous prime is 263683883. The next prime is 263683943. The reversal of 263683913 is 319386362.

It is a balanced prime because it is at equal distance from previous prime (263683883) and next prime (263683943).

It can be written as a sum of positive squares in only one way, i.e., 257666704 + 6017209 = 16052^2 + 2453^2 .

It is a cyclic number.

It is not a de Polignac number, because 263683913 - 2⁸ = 263683657 is a prime.

It is not a weakly prime, because it can be changed into another prime (263683943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131841956 + 131841957.

It is an arithmetic number, because the mean of its divisors is an integer number (131841957).

Almost surely, 2^263683913 is an apocalyptic number.

It is an amenable number.

263683913 is a deficient number, since it is larger than the sum of its proper divisors (1).

263683913 is an equidigital number, since it uses as much as digits as its factorization.

263683913 is an evil number, because the sum of its binary digits is even.

The product of its digits is 139968, while the sum is 41.

The square root of 263683913 is about 16238.3469909963. The cubic root of 263683913 is about 641.2507385233.

The spelling of 263683913 in words is "two hundred sixty-three million, six hundred eighty-three thousand, nine hundred thirteen".