263620460189 has 2 divisors, whose sum is σ = 263620460190. Its totient is φ = 263620460188.

The previous prime is 263620460123. The next prime is 263620460239. The reversal of 263620460189 is 981064026362.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 257165623225 + 6454836964 = 507115^2 + 80342^2 .

It is a cyclic number.

It is not a de Polignac number, because 263620460189 - 2²⁴ = 263603682973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (263620460689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131810230094 + 131810230095.

It is an arithmetic number, because the mean of its divisors is an integer number (131810230095).

Almost surely, 2^263620460189 is an apocalyptic number.

It is an amenable number.

263620460189 is a deficient number, since it is larger than the sum of its proper divisors (1).

263620460189 is an equidigital number, since it uses as much as digits as its factorization.

263620460189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 746496, while the sum is 47.

The spelling of 263620460189 in words is "two hundred sixty-three billion, six hundred twenty million, four hundred sixty thousand, one hundred eighty-nine".