1125103649 has 4 divisors (see below), whose sum is σ = 1126163136. Its totient is φ = 1124044164.

The previous prime is 1125103631. The next prime is 1125103657. The reversal of 1125103649 is 9463015211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1125103649 - 2²⁰ = 1124055073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1125103349) 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 3 ways as a sum of consecutive naturals, for example, 528149 + ... + 530274.

It is an arithmetic number, because the mean of its divisors is an integer number (281540784).

Almost surely, 2^1125103649 is an apocalyptic number.

It is an amenable number.

1125103649 is a deficient number, since it is larger than the sum of its proper divisors (1059487).

1125103649 is a wasteful number, since it uses less digits than its factorization.

1125103649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1059486.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 1125103649 is about 33542.5647349752. The cubic root of 1125103649 is about 1040.0738510796.

The spelling of 1125103649 in words is "one billion, one hundred twenty-five million, one hundred three thousand, six hundred forty-nine".