1189273152 has 28 divisors (see below), whose sum is σ = 3146619056. Its totient is φ = 396424320.

The previous prime is 1189273117. The next prime is 1189273157. The reversal of 1189273152 is 2513729811.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1189273152.

It is not an unprimeable number, because it can be changed into a prime (1189273157) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3096874 + ... + 3097257.

It is an arithmetic number, because the mean of its divisors is an integer number (112379252).

Almost surely, 2^1189273152 is an apocalyptic number.

1189273152 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1189273152 is an abundant number, since it is smaller than the sum of its proper divisors (1957345904).

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

1189273152 is an equidigital number, since it uses as much as digits as its factorization.

1189273152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6194146 (or 6194136 counting only the distinct ones).

The product of its digits is 30240, while the sum is 39.

The square root of 1189273152 is about 34485.8398766798. The cubic root of 1189273152 is about 1059.4827047551.

The spelling of 1189273152 in words is "one billion, one hundred eighty-nine million, two hundred seventy-three thousand, one hundred fifty-two".