9198747873 has 24 divisors (see below), whose sum is σ = 15200784768. Its totient is φ = 5251044672.

The previous prime is 9198747871. The next prime is 9198747917. The reversal of 9198747873 is 3787478919.

9198747873 is a `hidden beast` number, since 9 + 1 + 98 + 7 + 478 + 73 = 666.

It is not a de Polignac number, because 9198747873 - 2¹ = 9198747871 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a self number, because there is not a number n which added to its sum of digits gives 9198747873.

It is not an unprimeable number, because it can be changed into a prime (9198747871) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12340 + ... + 136197.

It is an arithmetic number, because the mean of its divisors is an integer number (633366032).

Almost surely, 2^9198747873 is an apocalyptic number.

It is an amenable number.

9198747873 is a deficient number, since it is larger than the sum of its proper divisors (6002036895).

9198747873 is a wasteful number, since it uses less digits than its factorization.

9198747873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149533 (or 149530 counting only the distinct ones).

The product of its digits is 21337344, while the sum is 63.

The square root of 9198747873 is about 95910.1030809581. The cubic root of 9198747873 is about 2095.2840411335.

The spelling of 9198747873 in words is "nine billion, one hundred ninety-eight million, seven hundred forty-seven thousand, eight hundred seventy-three".