9978192260 has 12 divisors (see below), whose sum is σ = 20954203788. Its totient is φ = 3991276896.

The previous prime is 9978192251. The next prime is 9978192299. The reversal of 9978192260 is 622918799.

It can be written as a sum of positive squares in 2 ways, for example, as 4104196096 + 5873996164 = 64064^2 + 76642^2 .

It is a super-3 number, since 3×9978192260³ (a number of 31 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 249454787 + ... + 249454826.

It is an arithmetic number, because the mean of its divisors is an integer number (1746183649).

Almost surely, 2^9978192260 is an apocalyptic number.

It is an amenable number.

9978192260 is an abundant number, since it is smaller than the sum of its proper divisors (10976011528).

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

9978192260 is a wasteful number, since it uses less digits than its factorization.

9978192260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 498909622 (or 498909620 counting only the distinct ones).

The product of its (nonzero) digits is 979776, while the sum is 53.

The square root of 9978192260 is about 99890.9017879006. The cubic root of 9978192260 is about 2152.8674384865.

The spelling of 9978192260 in words is "nine billion, nine hundred seventy-eight million, one hundred ninety-two thousand, two hundred sixty".