9807257994 has 16 divisors (see below), whose sum is σ = 19684321920. Its totient is φ = 3257451680.

The previous prime is 9807257989. The next prime is 9807258011. The reversal of 9807257994 is 4997527089.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2906754 + ... + 2910125.

It is an arithmetic number, because the mean of its divisors is an integer number (1230270120).

Almost surely, 2^9807257994 is an apocalyptic number.

9807257994 is an abundant number, since it is smaller than the sum of its proper divisors (9877063926).

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

9807257994 is a wasteful number, since it uses less digits than its factorization.

9807257994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5817165.

The product of its (nonzero) digits is 11430720, while the sum is 60.

The square root of 9807257994 is about 99031.6009867557. The cubic root of 9807257994 is about 2140.5031275461.

The spelling of 9807257994 in words is "nine billion, eight hundred seven million, two hundred fifty-seven thousand, nine hundred ninety-four".