1158487276649 has 4 divisors (see below), whose sum is σ = 1158495146820. Its totient is φ = 1158479406480.

The previous prime is 1158487276627. The next prime is 1158487276657. The reversal of 1158487276649 is 9466727848511.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1040318401600 + 118168875049 = 1019960^2 + 343757^2 .

It is a cyclic number.

It is not a de Polignac number, because 1158487276649 - 2²⁰ = 1158486228073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1158487276679) 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 3 ways as a sum of consecutive naturals, for example, 3709994 + ... + 4010115.

It is an arithmetic number, because the mean of its divisors is an integer number (289623786705).

Almost surely, 2^{1158487276649} is an apocalyptic number.

It is an amenable number.

1158487276649 is a deficient number, since it is larger than the sum of its proper divisors (7870171).

1158487276649 is an equidigital number, since it uses as much as digits as its factorization.

1158487276649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7870170.

The product of its digits is 162570240, while the sum is 68.

The spelling of 1158487276649 in words is "one trillion, one hundred fifty-eight billion, four hundred eighty-seven million, two hundred seventy-six thousand, six hundred forty-nine".