263113898 has 4 divisors (see below), whose sum is σ = 394670850. Its totient is φ = 131556948.

The previous prime is 263113883. The next prime is 263113927. The reversal of 263113898 is 898311362.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 244078129 + 19035769 = 15623^2 + 4363^2 .

It is a Curzon number.

It is an unprimeable number.

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, 65778473 + ... + 65778476.

Almost surely, 2^263113898 is an apocalyptic number.

263113898 is a deficient number, since it is larger than the sum of its proper divisors (131556952).

263113898 is a wasteful number, since it uses less digits than its factorization.

263113898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131556951.

The product of its digits is 62208, while the sum is 41.

The square root of 263113898 is about 16220.7859858886. The cubic root of 263113898 is about 640.7883335677.

The spelling of 263113898 in words is "two hundred sixty-three million, one hundred thirteen thousand, eight hundred ninety-eight".