983878013 has 4 divisors (see below), whose sum is σ = 997355868. Its totient is φ = 970400160.

The previous prime is 983877997. The next prime is 983878033. The reversal of 983878013 is 310878389.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 310878389 = 3041 ⋅102229.

It can be written as a sum of positive squares in 2 ways, for example, as 768287524 + 215590489 = 27718^2 + 14683^2 .

It is a cyclic number.

It is not a de Polignac number, because 983878013 - 2⁴ = 983877997 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 (983878033) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 6738818 + ... + 6738963.

It is an arithmetic number, because the mean of its divisors is an integer number (249338967).

Almost surely, 2^983878013 is an apocalyptic number.

It is an amenable number.

983878013 is a deficient number, since it is larger than the sum of its proper divisors (13477855).

983878013 is a wasteful number, since it uses less digits than its factorization.

983878013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13477854.

The product of its (nonzero) digits is 290304, while the sum is 47.

The square root of 983878013 is about 31366.8298206880. The cubic root of 983878013 is about 994.5968630237.

The spelling of 983878013 in words is "nine hundred eighty-three million, eight hundred seventy-eight thousand, thirteen".