1208039189 has 12 divisors (see below), whose sum is σ = 1466370144. Its totient is φ = 990441144.

The previous prime is 1208039153. The next prime is 1208039191. The reversal of 1208039189 is 9819308021.

It is not a de Polignac number, because 1208039189 - 2¹² = 1208035093 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 (1208039149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 534827 + ... + 537080.

It is an arithmetic number, because the mean of its divisors is an integer number (122197512).

Almost surely, 2^1208039189 is an apocalyptic number.

It is an amenable number.

1208039189 is a deficient number, since it is larger than the sum of its proper divisors (258330955).

1208039189 is a wasteful number, since it uses less digits than its factorization.

1208039189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1071944 (or 1071937 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 41.

The square root of 1208039189 is about 34756.8581577795. The cubic root of 1208039189 is about 1065.0263209935.

The spelling of 1208039189 in words is "one billion, two hundred eight million, thirty-nine thousand, one hundred eighty-nine".