1073638263 has 16 divisors (see below), whose sum is σ = 1514019200. Its totient is φ = 674866080.

The previous prime is 1073638219. The next prime is 1073638271. The reversal of 1073638263 is 3628363701.

It is not a de Polignac number, because 1073638263 - 2⁹ = 1073637751 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1073638273) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32608 + ... + 56661.

It is an arithmetic number, because the mean of its divisors is an integer number (94626200).

Almost surely, 2^1073638263 is an apocalyptic number.

1073638263 is a deficient number, since it is larger than the sum of its proper divisors (440380937).

1073638263 is a wasteful number, since it uses less digits than its factorization.

1073638263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89502.

The product of its (nonzero) digits is 108864, while the sum is 39.

The square root of 1073638263 is about 32766.4197464416. The cubic root of 1073638263 is about 1023.9670777862.

The spelling of 1073638263 in words is "one billion, seventy-three million, six hundred thirty-eight thousand, two hundred sixty-three".