1189006812 has 36 divisors (see below), whose sum is σ = 3434909296. Its totient is φ = 339716160.

The previous prime is 1189006811. The next prime is 1189006813. The reversal of 1189006812 is 2186009811.

It is an interprime number because it is at equal distance from previous prime (1189006811) and next prime (1189006813).

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1189006811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2358889 + ... + 2359392.

Almost surely, 2^1189006812 is an apocalyptic number.

1189006812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1189006812 is an abundant number, since it is smaller than the sum of its proper divisors (2245902484).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1189006812 is a wasteful number, since it uses less digits than its factorization.

1189006812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4718298 (or 4718293 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 36.

The square root of 1189006812 is about 34481.9780755107. The cubic root of 1189006812 is about 1059.4036077899.

Subtracting 1189006812 from its reverse (2186009811), we obtain a cube (997002999 = 999³).

The spelling of 1189006812 in words is "one billion, one hundred eighty-nine million, six thousand, eight hundred twelve".