1189662144 has 56 divisors (see below), whose sum is σ = 3433803648. Its totient is φ = 360503040.

The previous prime is 1189662049. The next prime is 1189662233. The reversal of 1189662144 is 4412669811.

It is a junction number, because it is equal to n+sod(n) for n = 1189662096 and 1189662105.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 279532 + ... + 283755.

Almost surely, 2^1189662144 is an apocalyptic number.

It is an amenable number.

1189662144 is an abundant number, since it is smaller than the sum of its proper divisors (2244141504).

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

1189662144 is a wasteful number, since it uses less digits than its factorization.

1189662144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 563313 (or 563303 counting only the distinct ones).

The product of its digits is 82944, while the sum is 42.

The square root of 1189662144 is about 34491.4792956173. The cubic root of 1189662144 is about 1059.5982053783.

The spelling of 1189662144 in words is "one billion, one hundred eighty-nine million, six hundred sixty-two thousand, one hundred forty-four".