1179923555 has 4 divisors (see below), whose sum is σ = 1415908272. Its totient is φ = 943938840.

The previous prime is 1179923497. The next prime is 1179923593. The reversal of 1179923555 is 5553299711.

It is a happy number.

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

It is not a de Polignac number, because 1179923555 - 2¹⁰ = 1179922531 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 117992351 + ... + 117992360.

It is an arithmetic number, because the mean of its divisors is an integer number (353977068).

Almost surely, 2^1179923555 is an apocalyptic number.

1179923555 is a deficient number, since it is larger than the sum of its proper divisors (235984717).

1179923555 is an equidigital number, since it uses as much as digits as its factorization.

1179923555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235984716.

The product of its digits is 425250, while the sum is 47.

The square root of 1179923555 is about 34350.0153566196. The cubic root of 1179923555 is about 1056.6989852466.

The spelling of 1179923555 in words is "one billion, one hundred seventy-nine million, nine hundred twenty-three thousand, five hundred fifty-five".