1195942489 has 16 divisors (see below), whose sum is σ = 1407522816. Its totient is φ = 994809600.

The previous prime is 1195942483. The next prime is 1195942493. The reversal of 1195942489 is 9842495911.

It is a cyclic number.

It is not a de Polignac number, because 1195942489 - 2¹³ = 1195934297 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1195942483) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 43909 + ... + 65725.

It is an arithmetic number, because the mean of its divisors is an integer number (87970176).

Almost surely, 2^1195942489 is an apocalyptic number.

It is an amenable number.

1195942489 is a deficient number, since it is larger than the sum of its proper divisors (211580327).

1195942489 is a wasteful number, since it uses less digits than its factorization.

1195942489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22056.

The product of its digits is 933120, while the sum is 52.

The square root of 1195942489 is about 34582.4014348339. The cubic root of 1195942489 is about 1061.4595087113.

The spelling of 1195942489 in words is "one billion, one hundred ninety-five million, nine hundred forty-two thousand, four hundred eighty-nine".