1193664649091 has 8 divisors (see below), whose sum is σ = 1232194473984. Its totient is φ = 1155136356360.

The previous prime is 1193664649057. The next prime is 1193664649103. The reversal of 1193664649091 is 1909464663911.

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 1193664649091 - 2⁶ = 1193664649027 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1193664649091.

It is not an unprimeable number, because it can be changed into a prime (1193664609091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1320590 + ... + 2032556.

It is an arithmetic number, because the mean of its divisors is an integer number (154024309248).

Almost surely, 2^{1193664649091} is an apocalyptic number.

1193664649091 is a deficient number, since it is larger than the sum of its proper divisors (38529824893).

1193664649091 is an equidigital number, since it uses as much as digits as its factorization.

1193664649091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 766081.

The product of its (nonzero) digits is 7558272, while the sum is 59.

The spelling of 1193664649091 in words is "one trillion, one hundred ninety-three billion, six hundred sixty-four million, six hundred forty-nine thousand, ninety-one".