1189022045 has 4 divisors (see below), whose sum is σ = 1426826460. Its totient is φ = 951217632.

The previous prime is 1189022039. The next prime is 1189022057. The reversal of 1189022045 is 5402209811.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 257185369 + 931836676 = 16037^2 + 30526^2 .

It is a cyclic number.

It is not a de Polignac number, because 1189022045 - 2¹⁴ = 1189005661 is a prime.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 118902200 + ... + 118902209.

It is an arithmetic number, because the mean of its divisors is an integer number (356706615).

Almost surely, 2^1189022045 is an apocalyptic number.

It is an amenable number.

1189022045 is a deficient number, since it is larger than the sum of its proper divisors (237804415).

1189022045 is an equidigital number, since it uses as much as digits as its factorization.

1189022045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237804414.

The product of its (nonzero) digits is 5760, while the sum is 32.

The square root of 1189022045 is about 34482.1989583031. The cubic root of 1189022045 is about 1059.4081319653.

The spelling of 1189022045 in words is "one billion, one hundred eighty-nine million, twenty-two thousand, forty-five".