1123154137 has 12 divisors (see below), whose sum is σ = 1351580580. Its totient is φ = 929505696.

The previous prime is 1123154119. The next prime is 1123154161. The reversal of 1123154137 is 7314513211.

It can be written as a sum of positive squares in 2 ways, for example, as 342287001 + 780867136 = 18501^2 + 27944^2 .

It is not a de Polignac number, because 1123154137 - 2¹¹ = 1123152089 is a prime.

It is a super-2 number, since 2×1123154137² = 2522950430920429538, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1123154237) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 393778 + ... + 396619.

It is an arithmetic number, because the mean of its divisors is an integer number (112631715).

Almost surely, 2^1123154137 is an apocalyptic number.

It is an amenable number.

1123154137 is a deficient number, since it is larger than the sum of its proper divisors (228426443).

1123154137 is an equidigital number, since it uses as much as digits as its factorization.

1123154137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 790440 (or 790433 counting only the distinct ones).

The product of its digits is 2520, while the sum is 28.

The square root of 1123154137 is about 33513.4918652175. The cubic root of 1123154137 is about 1039.4727779529.

Adding to 1123154137 its reverse (7314513211), we get a palindrome (8437667348).

The spelling of 1123154137 in words is "one billion, one hundred twenty-three million, one hundred fifty-four thousand, one hundred thirty-seven".