263642153 has 2 divisors, whose sum is σ = 263642154. Its totient is φ = 263642152.

The previous prime is 263642111. The next prime is 263642189. The reversal of 263642153 is 351246362.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 253350889 + 10291264 = 15917^2 + 3208^2 .

It is a cyclic number.

It is not a de Polignac number, because 263642153 - 2¹⁶ = 263576617 is a prime.

It is not a weakly prime, because it can be changed into another prime (263641153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131821076 + 131821077.

It is an arithmetic number, because the mean of its divisors is an integer number (131821077).

Almost surely, 2^263642153 is an apocalyptic number.

It is an amenable number.

263642153 is a deficient number, since it is larger than the sum of its proper divisors (1).

263642153 is an equidigital number, since it uses as much as digits as its factorization.

263642153 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 32.

The square root of 263642153 is about 16237.0610949149. The cubic root of 263642153 is about 641.2168848026.

The spelling of 263642153 in words is "two hundred sixty-three million, six hundred forty-two thousand, one hundred fifty-three".