1189772064 has 480 divisors, whose sum is σ = 4180087296. Its totient is φ = 328458240.

The previous prime is 1189772057. The next prime is 1189772099. The reversal of 1189772064 is 4602779811.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 17757759 + ... + 17757825.

Almost surely, 2^1189772064 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1189772064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2090043648).

1189772064 is an abundant number, since it is smaller than the sum of its proper divisors (2990315232).

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

1189772064 is a wasteful number, since it uses less digits than its factorization.

1189772064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150 (or 133 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 45.

The square root of 1189772064 is about 34493.0726958327. The cubic root of 1189772064 is about 1059.6308385782.

The spelling of 1189772064 in words is "one billion, one hundred eighty-nine million, seven hundred seventy-two thousand, sixty-four".