260538813 has 48 divisors (see below), whose sum is σ = 404801280. Its totient is φ = 161175168.

The previous prime is 260538769. The next prime is 260538827. The reversal of 260538813 is 318835062.

260538813 is a `hidden beast` number, since 2 + 605 + 38 + 8 + 13 = 666.

It is not a de Polignac number, because 260538813 - 2¹⁶ = 260473277 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (260538913) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 821731 + ... + 822047.

It is an arithmetic number, because the mean of its divisors is an integer number (8433360).

Almost surely, 2^260538813 is an apocalyptic number.

It is an amenable number.

260538813 is a deficient number, since it is larger than the sum of its proper divisors (144262467).

260538813 is a wasteful number, since it uses less digits than its factorization.

260538813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 466 (or 463 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 260538813 is about 16141.2147312400. The cubic root of 260538813 is about 638.6910200685.

The spelling of 260538813 in words is "two hundred sixty million, five hundred thirty-eight thousand, eight hundred thirteen".