1128951 has 8 divisors (see below), whose sum is σ = 1672560. Its totient is φ = 752616.

The previous prime is 1128949. The next prime is 1128977. The reversal of 1128951 is 1598211.

It is not a de Polignac number, because 1128951 - 2¹ = 1128949 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 41813 = 1128951 / (1 + 1 + 2 + 8 + 9 + 5 + 1).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1128901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20880 + ... + 20933.

It is an arithmetic number, because the mean of its divisors is an integer number (209070).

2^1128951 is an apocalyptic number.

1128951 is a deficient number, since it is larger than the sum of its proper divisors (543609).

1128951 is an equidigital number, since it uses as much as digits as its factorization.

1128951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41822 (or 41816 counting only the distinct ones).

The product of its digits is 720, while the sum is 27.

The square root of 1128951 is about 1062.5210586148. The cubic root of 1128951 is about 104.1258031362.

It can be divided in two parts, 112895 and 1, that added together give a square (112896 = 336²).

The spelling of 1128951 in words is "one million, one hundred twenty-eight thousand, nine hundred fifty-one".