1125843169 has 24 divisors (see below), whose sum is σ = 1295824320. Its totient is φ = 975569760.

The previous prime is 1125843127. The next prime is 1125843211. The reversal of 1125843169 is 9613485211.

It is an interprime number because it is at equal distance from previous prime (1125843127) and next prime (1125843211).

It is not a de Polignac number, because 1125843169 - 2⁷ = 1125843041 is a prime.

It is a super-2 number, since 2×1125843169² = 2535045682367925122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1125843109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1104342 + ... + 1105360.

It is an arithmetic number, because the mean of its divisors is an integer number (53992680).

Almost surely, 2^1125843169 is an apocalyptic number.

It is an amenable number.

1125843169 is a deficient number, since it is larger than the sum of its proper divisors (169981151).

1125843169 is a wasteful number, since it uses less digits than its factorization.

1125843169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1461 (or 1450 counting only the distinct ones).

The product of its digits is 51840, while the sum is 40.

The square root of 1125843169 is about 33553.5865296096. The cubic root of 1125843169 is about 1040.3016780764.

The spelling of 1125843169 in words is "one billion, one hundred twenty-five million, eight hundred forty-three thousand, one hundred sixty-nine".