1179942791 has 4 divisors (see below), whose sum is σ = 1181310912. Its totient is φ = 1178574672.

The previous prime is 1179942787. The next prime is 1179942847. The reversal of 1179942791 is 1972499711.

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

It is a cyclic number.

It is not a de Polignac number, because 1179942791 - 2² = 1179942787 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1179942721) 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, 682766 + ... + 684491.

It is an arithmetic number, because the mean of its divisors is an integer number (295327728).

Almost surely, 2^1179942791 is an apocalyptic number.

1179942791 is a deficient number, since it is larger than the sum of its proper divisors (1368121).

1179942791 is an equidigital number, since it uses as much as digits as its factorization.

1179942791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1368120.

The product of its digits is 285768, while the sum is 50.

The square root of 1179942791 is about 34350.2953553532. The cubic root of 1179942791 is about 1056.7047275822.

The spelling of 1179942791 in words is "one billion, one hundred seventy-nine million, nine hundred forty-two thousand, seven hundred ninety-one".