985051013 has 4 divisors (see below), whose sum is σ = 985181388. Its totient is φ = 984920640.

The previous prime is 985051007. The next prime is 985051063. The reversal of 985051013 is 310150589.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 310150589 = 7 ⋅44307227.

It can be written as a sum of positive squares in 2 ways, for example, as 553990369 + 431060644 = 23537^2 + 20762^2 .

It is a cyclic number.

It is not a de Polignac number, because 985051013 - 2⁶ = 985050949 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 (985051063) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53108 + ... + 69213.

It is an arithmetic number, because the mean of its divisors is an integer number (246295347).

Almost surely, 2^985051013 is an apocalyptic number.

It is an amenable number.

985051013 is a deficient number, since it is larger than the sum of its proper divisors (130375).

985051013 is a wasteful number, since it uses less digits than its factorization.

985051013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130374.

The product of its (nonzero) digits is 5400, while the sum is 32.

The square root of 985051013 is about 31385.5223470950. The cubic root of 985051013 is about 994.9919657946.

The spelling of 985051013 in words is "nine hundred eighty-five million, fifty-one thousand, thirteen".