1005878913 has 16 divisors (see below), whose sum is σ = 1475072256. Its totient is φ = 605831040.

The previous prime is 1005878911. The next prime is 1005878957. The reversal of 1005878913 is 3198785001.

It is not a de Polignac number, because 1005878913 - 2¹ = 1005878911 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1005878911) 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, 272548 + ... + 276213.

It is an arithmetic number, because the mean of its divisors is an integer number (92192016).

Almost surely, 2^1005878913 is an apocalyptic number.

1005878913 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1005878913 is a deficient number, since it is larger than the sum of its proper divisors (469193343).

1005878913 is a wasteful number, since it uses less digits than its factorization.

1005878913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 548824.

The product of its (nonzero) digits is 60480, while the sum is 42.

The square root of 1005878913 is about 31715.5941612324. The cubic root of 1005878913 is about 1001.9558099802.

The spelling of 1005878913 in words is "one billion, five million, eight hundred seventy-eight thousand, nine hundred thirteen".