1128388958 has 4 divisors (see below), whose sum is σ = 1692583440. Its totient is φ = 564194478.

The previous prime is 1128388951. The next prime is 1128388973. The reversal of 1128388958 is 8598838211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8598838211 = 7457 ⋅1153123.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1128388951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 282097238 + ... + 282097241.

It is an arithmetic number, because the mean of its divisors is an integer number (423145860).

Almost surely, 2^1128388958 is an apocalyptic number.

1128388958 is a deficient number, since it is larger than the sum of its proper divisors (564194482).

1128388958 is an equidigital number, since it uses as much as digits as its factorization.

1128388958 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564194481.

The product of its digits is 1105920, while the sum is 53.

The square root of 1128388958 is about 33591.5012763645. The cubic root of 1128388958 is about 1041.0852078318.

The spelling of 1128388958 in words is "one billion, one hundred twenty-eight million, three hundred eighty-eight thousand, nine hundred fifty-eight".