1125646463 has 4 divisors (see below), whose sum is σ = 1126916400. Its totient is φ = 1124376528.

The previous prime is 1125646453. The next prime is 1125646477. The reversal of 1125646463 is 3646465211.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1125646463 - 2⁴ = 1125646447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1125646453) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 633638 + ... + 635411.

It is an arithmetic number, because the mean of its divisors is an integer number (281729100).

Almost surely, 2^1125646463 is an apocalyptic number.

1125646463 is a deficient number, since it is larger than the sum of its proper divisors (1269937).

1125646463 is an equidigital number, since it uses as much as digits as its factorization.

1125646463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1269936.

The product of its digits is 103680, while the sum is 38.

The square root of 1125646463 is about 33550.6551798918. The cubic root of 1125646463 is about 1040.2410877839.

The spelling of 1125646463 in words is "one billion, one hundred twenty-five million, six hundred forty-six thousand, four hundred sixty-three".