1189225973 has 8 divisors (see below), whose sum is σ = 1356040728. Its totient is φ = 1033173504.

The previous prime is 1189225967. The next prime is 1189225981. The reversal of 1189225973 is 3795229811.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 61811044 + 1127414929 = 7862^2 + 33577^2 .

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

It is not a de Polignac number, because 1189225973 - 2⁴ = 1189225957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1189225943) 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, 2690336 + ... + 2690777.

It is an arithmetic number, because the mean of its divisors is an integer number (169505091).

Almost surely, 2^1189225973 is an apocalyptic number.

1189225973 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1189225973 is a deficient number, since it is larger than the sum of its proper divisors (166814755).

1189225973 is a wasteful number, since it uses less digits than its factorization.

1189225973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5381143.

The product of its digits is 272160, while the sum is 47.

The square root of 1189225973 is about 34485.1558355186. The cubic root of 1189225973 is about 1059.4686945182.

The spelling of 1189225973 in words is "one billion, one hundred eighty-nine million, two hundred twenty-five thousand, nine hundred seventy-three".