9870513812 has 6 divisors (see below), whose sum is σ = 17273399178. Its totient is φ = 4935256904.

The previous prime is 9870513773. The next prime is 9870513817. The reversal of 9870513812 is 2183150789.

It can be written as a sum of positive squares in only one way, i.e., 9638134276 + 232379536 = 98174^2 + 15244^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9870513817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1233814223 + ... + 1233814230.

It is an arithmetic number, because the mean of its divisors is an integer number (2878899863).

Almost surely, 2^9870513812 is an apocalyptic number.

It is an amenable number.

9870513812 is a deficient number, since it is larger than the sum of its proper divisors (7402885366).

9870513812 is a wasteful number, since it uses less digits than its factorization.

9870513812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2467628457 (or 2467628455 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 44.

The square root of 9870513812 is about 99350.4595459930. The cubic root of 9870513812 is about 2145.0952779423.

The spelling of 9870513812 in words is "nine billion, eight hundred seventy million, five hundred thirteen thousand, eight hundred twelve".