1125181922 has 6 divisors (see below), whose sum is σ = 1687844043. Its totient is φ = 562567242.

The previous prime is 1125181913. The next prime is 1125181949. The reversal of 1125181922 is 2291815211.

It can be written as a sum of positive squares in only one way, i.e., 562590961 + 562590961 = 23719^2 + 23719^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=23719.

It is a super-2 number, since 2×1125181922² = 2532068715191228168, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

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 2 ways as a sum of consecutive naturals, for example, 35579 + ... + 59297.

Almost surely, 2^1125181922 is an apocalyptic number.

1125181922 is a deficient number, since it is larger than the sum of its proper divisors (562662121).

1125181922 is an frugal number, since it uses more digits than its factorization.

1125181922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47440 (or 23721 counting only the distinct ones).

The product of its digits is 2880, while the sum is 32.

The square root of 1125181922 is about 33543.7314859274. The cubic root of 1125181922 is about 1040.0979696909.

Multiplying 1125181922 by its sum of digits (32), we get a square (36005821504 = 189752²).

The spelling of 1125181922 in words is "one billion, one hundred twenty-five million, one hundred eighty-one thousand, nine hundred twenty-two".