813260263238 has 16 divisors (see below), whose sum is σ = 1291666733280. Its totient is φ = 382705355136.

The previous prime is 813260263219. The next prime is 813260263259. The reversal of 813260263238 is 832362062318.

It is a super-2 number, since 2×813260263238² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3397583 + ... + 3629061.

It is an arithmetic number, because the mean of its divisors is an integer number (80729170830).

Almost surely, 2^813260263238 is an apocalyptic number.

813260263238 is a deficient number, since it is larger than the sum of its proper divisors (478406470042).

813260263238 is a wasteful number, since it uses less digits than its factorization.

813260263238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334831.

The product of its (nonzero) digits is 497664, while the sum is 44.

The spelling of 813260263238 in words is "eight hundred thirteen billion, two hundred sixty million, two hundred sixty-three thousand, two hundred thirty-eight".