1188794879 has 4 divisors (see below), whose sum is σ = 1191503280. Its totient is φ = 1186086480.

The previous prime is 1188794837. The next prime is 1188794903. The reversal of 1188794879 is 9784978811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9784978811 = 137 ⋅71423203.

It is a cyclic number.

It is not a de Polignac number, because 1188794879 - 2⁸ = 1188794623 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 (1188794179) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1353542 + ... + 1354419.

It is an arithmetic number, because the mean of its divisors is an integer number (297875820).

Almost surely, 2^1188794879 is an apocalyptic number.

1188794879 is a deficient number, since it is larger than the sum of its proper divisors (2708401).

1188794879 is an equidigital number, since it uses as much as digits as its factorization.

1188794879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2708400.

The product of its digits is 8128512, while the sum is 62.

The square root of 1188794879 is about 34478.9048404963. The cubic root of 1188794879 is about 1059.3406600355.

The spelling of 1188794879 in words is "one billion, one hundred eighty-eight million, seven hundred ninety-four thousand, eight hundred seventy-nine".