1174897980491 has 4 divisors (see below), whose sum is σ = 1194158603184. Its totient is φ = 1155637357800.

The previous prime is 1174897980469. The next prime is 1174897980497. The reversal of 1174897980491 is 1940897984711.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1174897980491 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1174897980497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9630311255 + ... + 9630311376.

It is an arithmetic number, because the mean of its divisors is an integer number (298539650796).

Almost surely, 2^{1174897980491} is an apocalyptic number.

1174897980491 is a deficient number, since it is larger than the sum of its proper divisors (19260622693).

1174897980491 is an equidigital number, since it uses as much as digits as its factorization.

1174897980491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19260622692.

The product of its (nonzero) digits is 36578304, while the sum is 68.

The spelling of 1174897980491 in words is "one trillion, one hundred seventy-four billion, eight hundred ninety-seven million, nine hundred eighty thousand, four hundred ninety-one".