1189948723 has 8 divisors (see below), whose sum is σ = 1243968768. Its totient is φ = 1136118984.

The previous prime is 1189948681. The next prime is 1189948751. The reversal of 1189948723 is 3278499811.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1189948723 - 2⁹ = 1189948211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1189948783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34711 + ... + 59872.

It is an arithmetic number, because the mean of its divisors is an integer number (155496096).

Almost surely, 2^1189948723 is an apocalyptic number.

1189948723 is a deficient number, since it is larger than the sum of its proper divisors (54020045).

1189948723 is an equidigital number, since it uses as much as digits as its factorization.

1189948723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95153.

The product of its digits is 870912, while the sum is 52.

The square root of 1189948723 is about 34495.6333903293. The cubic root of 1189948723 is about 1059.6832811331.

The spelling of 1189948723 in words is "one billion, one hundred eighty-nine million, nine hundred forty-eight thousand, seven hundred twenty-three".