1156413673 has 4 divisors (see below), whose sum is σ = 1157195988. Its totient is φ = 1155631360.

The previous prime is 1156413667. The next prime is 1156413679. The reversal of 1156413673 is 3763146511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3763146511 = 13597 ⋅276763.

It is an interprime number because it is at equal distance from previous prime (1156413667) and next prime (1156413679).

It can be written as a sum of positive squares in 2 ways, for example, as 797045824 + 359367849 = 28232^2 + 18957^2 .

It is a cyclic number.

It is not a de Polignac number, because 1156413673 - 2²⁹ = 619542761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1156413679) 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, 388936 + ... + 391897.

It is an arithmetic number, because the mean of its divisors is an integer number (289298997).

Almost surely, 2^1156413673 is an apocalyptic number.

It is an amenable number.

1156413673 is a deficient number, since it is larger than the sum of its proper divisors (782315).

1156413673 is an equidigital number, since it uses as much as digits as its factorization.

1156413673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 782314.

The product of its digits is 45360, while the sum is 37.

The square root of 1156413673 is about 34006.0828823315. The cubic root of 1156413673 is about 1049.6336357513.

The spelling of 1156413673 in words is "one billion, one hundred fifty-six million, four hundred thirteen thousand, six hundred seventy-three".