1189144056 has 32 divisors (see below), whose sum is σ = 3023251200. Its totient is φ = 389662560.

The previous prime is 1189144037. The next prime is 1189144057. The reversal of 1189144056 is 6504419811.

1189144056 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×1189144056² = 2828127171840262272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1189144057) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 418480 + ... + 421311.

It is an arithmetic number, because the mean of its divisors is an integer number (94476600).

Almost surely, 2^1189144056 is an apocalyptic number.

It is an amenable number.

1189144056 is an abundant number, since it is smaller than the sum of its proper divisors (1834107144).

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

1189144056 is a wasteful number, since it uses less digits than its factorization.

1189144056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 839859 (or 839855 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 39.

The square root of 1189144056 is about 34483.9681011336. The cubic root of 1189144056 is about 1059.4443676334. Note that the first 3 decimals are identical.

The spelling of 1189144056 in words is "one billion, one hundred eighty-nine million, one hundred forty-four thousand, fifty-six".