1173898979889 has 8 divisors (see below), whose sum is σ = 1565204639712. Its totient is φ = 782596320000.

The previous prime is 1173898979881. The next prime is 1173898979893. The reversal of 1173898979889 is 9889798983711.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1173898979889 - 2³ = 1173898979881 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1173898979881) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 426897 + ... + 1590609.

It is an arithmetic number, because the mean of its divisors is an integer number (195650579964).

Almost surely, 2^{1173898979889} is an apocalyptic number.

It is an amenable number.

1173898979889 is a deficient number, since it is larger than the sum of its proper divisors (391305659823).

1173898979889 is a wasteful number, since it uses less digits than its factorization.

1173898979889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1499967.

The product of its digits is 3950456832, while the sum is 87.

The spelling of 1173898979889 in words is "one trillion, one hundred seventy-three billion, eight hundred ninety-eight million, nine hundred seventy-nine thousand, eight hundred eighty-nine".