1198623545779 has 8 divisors (see below), whose sum is σ = 1342929575088. Its totient is φ = 1060207558560.

The previous prime is 1198623545773. The next prime is 1198623545831. The reversal of 1198623545779 is 9775453268911.

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

It is a cyclic number.

It is not a de Polignac number, because 1198623545779 - 2³³ = 1190033611187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1198623545773) 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, 1472510092 + ... + 1472510905.

It is an arithmetic number, because the mean of its divisors is an integer number (167866196886).

Almost surely, 2^{1198623545779} is an apocalyptic number.

1198623545779 is a deficient number, since it is larger than the sum of its proper divisors (144306029309).

1198623545779 is a wasteful number, since it uses less digits than its factorization.

1198623545779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2945021045.

The product of its digits is 114307200, while the sum is 67.

The spelling of 1198623545779 in words is "one trillion, one hundred ninety-eight billion, six hundred twenty-three million, five hundred forty-five thousand, seven hundred seventy-nine".