263538983 has 2 divisors, whose sum is σ = 263538984. Its totient is φ = 263538982.

The previous prime is 263538943. The next prime is 263539013. The reversal of 263538983 is 389835362.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 263538983 - 2¹⁰ = 263537959 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (263538943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131769491 + 131769492.

It is an arithmetic number, because the mean of its divisors is an integer number (131769492).

Almost surely, 2^263538983 is an apocalyptic number.

263538983 is a deficient number, since it is larger than the sum of its proper divisors (1).

263538983 is an equidigital number, since it uses as much as digits as its factorization.

263538983 is an evil number, because the sum of its binary digits is even.

The product of its digits is 933120, while the sum is 47.

The square root of 263538983 is about 16233.8837928575. The cubic root of 263538983 is about 641.1332323006.

The spelling of 263538983 in words is "two hundred sixty-three million, five hundred thirty-eight thousand, nine hundred eighty-three".