1191079275849 has 24 divisors (see below), whose sum is σ = 1762133891232. Its totient is φ = 774848289600.

The previous prime is 1191079275847. The next prime is 1191079275851. The reversal of 1191079275849 is 9485729701911.

1191079275849 is a `hidden beast` number, since 1 + 19 + 10 + 7 + 9 + 27 + 584 + 9 = 666.

It is an interprime number because it is at equal distance from previous prime (1191079275847) and next prime (1191079275851).

It is not a de Polignac number, because 1191079275849 - 2¹ = 1191079275847 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1191079275847) 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, 1057452 + ... + 1870925.

It is an arithmetic number, because the mean of its divisors is an integer number (73422245468).

Almost surely, 2^{1191079275849} is an apocalyptic number.

It is an amenable number.

1191079275849 is a deficient number, since it is larger than the sum of its proper divisors (571054615383).

1191079275849 is a wasteful number, since it uses less digits than its factorization.

1191079275849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2929477 (or 2929474 counting only the distinct ones).

The product of its (nonzero) digits is 11430720, while the sum is 63.

The spelling of 1191079275849 in words is "one trillion, one hundred ninety-one billion, seventy-nine million, two hundred seventy-five thousand, eight hundred forty-nine".