263733161 has 2 divisors, whose sum is σ = 263733162. Its totient is φ = 263733160.

The previous prime is 263733103. The next prime is 263733193. The reversal of 263733161 is 161337362.

It is an a-pointer prime, because the next prime (263733193) can be obtained adding 263733161 to its sum of digits (32).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 183738025 + 79995136 = 13555^2 + 8944^2 .

It is a cyclic number.

It is not a de Polignac number, because 263733161 - 2⁶ = 263733097 is a prime.

It is a super-2 number, since 2×263733161² = 139110360422103842, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (763733161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131866580 + 131866581.

It is an arithmetic number, because the mean of its divisors is an integer number (131866581).

Almost surely, 2^263733161 is an apocalyptic number.

It is an amenable number.

263733161 is a deficient number, since it is larger than the sum of its proper divisors (1).

263733161 is an equidigital number, since it uses as much as digits as its factorization.

263733161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13608, while the sum is 32.

The square root of 263733161 is about 16239.8633307057. The cubic root of 263733161 is about 641.2906579735.

The spelling of 263733161 in words is "two hundred sixty-three million, seven hundred thirty-three thousand, one hundred sixty-one".