1196778489 has 4 divisors (see below), whose sum is σ = 1595704656. Its totient is φ = 797852324.

The previous prime is 1196778469. The next prime is 1196778491. The reversal of 1196778489 is 9848776911.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1196778489 - 2⁹ = 1196777977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1196778439) 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, 199463079 + ... + 199463084.

It is an arithmetic number, because the mean of its divisors is an integer number (398926164).

Almost surely, 2^1196778489 is an apocalyptic number.

It is an amenable number.

1196778489 is a deficient number, since it is larger than the sum of its proper divisors (398926167).

1196778489 is an equidigital number, since it uses as much as digits as its factorization.

1196778489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398926166.

The product of its digits is 6096384, while the sum is 60.

The square root of 1196778489 is about 34594.4863959562. The cubic root of 1196778489 is about 1061.7067818785.

The spelling of 1196778489 in words is "one billion, one hundred ninety-six million, seven hundred seventy-eight thousand, four hundred eighty-nine".