9845997534 has 12 divisors (see below), whose sum is σ = 21332994696. Its totient is φ = 3281999172.

The previous prime is 9845997533. The next prime is 9845997589. The reversal of 9845997534 is 4357995489.

9845997534 = 49612² + 49613² + ... + 49615².

9845997534 is a `hidden beast` number, since 9 + 8 + 4 + 5 + 9 + 97 + 534 = 666.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9845997533) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 273499914 + ... + 273499949.

It is an arithmetic number, because the mean of its divisors is an integer number (1777749558).

Almost surely, 2^9845997534 is an apocalyptic number.

9845997534 is an abundant number, since it is smaller than the sum of its proper divisors (11486997162).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9845997534 is a wasteful number, since it uses less digits than its factorization.

9845997534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 546999871 (or 546999868 counting only the distinct ones).

The product of its digits is 48988800, while the sum is 63.

The square root of 9845997534 is about 99227.0000251948. Note that the first 4 decimals coincide. The cubic root of 9845997534 is about 2143.3178171813.

The spelling of 9845997534 in words is "nine billion, eight hundred forty-five million, nine hundred ninety-seven thousand, five hundred thirty-four".