9598977981 has 48 divisors (see below), whose sum is σ = 14896627200. Its totient is φ = 6170333760.

The previous prime is 9598977967. The next prime is 9598978003. The reversal of 9598977981 is 1897798959.

It is not a de Polignac number, because 9598977981 - 2⁶ = 9598977917 is a prime.

It is a super-2 number, since 2×9598977981² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9598977781) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2204995 + ... + 2209343.

It is an arithmetic number, because the mean of its divisors is an integer number (310346400).

Almost surely, 2^9598977981 is an apocalyptic number.

It is an amenable number.

9598977981 is a deficient number, since it is larger than the sum of its proper divisors (5297649219).

9598977981 is a wasteful number, since it uses less digits than its factorization.

9598977981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4688 (or 4676 counting only the distinct ones).

The product of its digits is 102876480, while the sum is 72.

The square root of 9598977981 is about 97974.3741036400. The cubic root of 9598977981 is about 2125.2417150464.

The spelling of 9598977981 in words is "nine billion, five hundred ninety-eight million, nine hundred seventy-seven thousand, nine hundred eighty-one".