1180689493 has 4 divisors (see below), whose sum is σ = 1180922220. Its totient is φ = 1180456768.

The previous prime is 1180689451. The next prime is 1180689527. The reversal of 1180689493 is 3949860811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3949860811 = 13 ⋅303835447.

It can be written as a sum of positive squares in 2 ways, for example, as 1075380849 + 105308644 = 32793^2 + 10262^2 .

It is a cyclic number.

It is not a de Polignac number, because 1180689493 - 2¹³ = 1180681301 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1180689443) 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, 108580 + ... + 118957.

It is an arithmetic number, because the mean of its divisors is an integer number (295230555).

Almost surely, 2^1180689493 is an apocalyptic number.

It is an amenable number.

1180689493 is a deficient number, since it is larger than the sum of its proper divisors (232727).

1180689493 is an equidigital number, since it uses as much as digits as its factorization.

1180689493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232726.

The product of its (nonzero) digits is 373248, while the sum is 49.

The square root of 1180689493 is about 34361.1625676431. The cubic root of 1180689493 is about 1056.9275850391.

The spelling of 1180689493 in words is "one billion, one hundred eighty million, six hundred eighty-nine thousand, four hundred ninety-three".