1125703161 has 24 divisors (see below), whose sum is σ = 1878181344. Its totient is φ = 642111360.

The previous prime is 1125703081. The next prime is 1125703193. The reversal of 1125703161 is 1613075211.

1125703161 is a `hidden beast` number, since 1 + 1 + 2 + 570 + 31 + 61 = 666.

It is not a de Polignac number, because 1125703161 - 2¹⁴ = 1125686777 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1125703261) 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 23 ways as a sum of consecutive naturals, for example, 332751 + ... + 336116.

It is an arithmetic number, because the mean of its divisors is an integer number (78257556).

Almost surely, 2^1125703161 is an apocalyptic number.

1125703161 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1125703161 is a deficient number, since it is larger than the sum of its proper divisors (752478183).

1125703161 is a wasteful number, since it uses less digits than its factorization.

1125703161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 668901 (or 668898 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 27.

The square root of 1125703161 is about 33551.5001303966. The cubic root of 1125703161 is about 1040.2585528883.

Adding to 1125703161 its reverse (1613075211), we get a palindrome (2738778372).

The spelling of 1125703161 in words is "one billion, one hundred twenty-five million, seven hundred three thousand, one hundred sixty-one".