1128573939 has 4 divisors (see below), whose sum is σ = 1504765256. Its totient is φ = 752382624.

The previous prime is 1128573911. The next prime is 1128573961. The reversal of 1128573939 is 9393758211.

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

It is not a de Polignac number, because 1128573939 - 2⁹ = 1128573427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1121573939) 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, 188095654 + ... + 188095659.

It is an arithmetic number, because the mean of its divisors is an integer number (376191314).

Almost surely, 2^1128573939 is an apocalyptic number.

1128573939 is a deficient number, since it is larger than the sum of its proper divisors (376191317).

1128573939 is an equidigital number, since it uses as much as digits as its factorization.

1128573939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376191316.

The product of its digits is 408240, while the sum is 48.

The square root of 1128573939 is about 33594.2545534203. The cubic root of 1128573939 is about 1041.1420943805.

The spelling of 1128573939 in words is "one billion, one hundred twenty-eight million, five hundred seventy-three thousand, nine hundred thirty-nine".