1126643453 has 4 divisors (see below), whose sum is σ = 1213308348. Its totient is φ = 1039978560.

The previous prime is 1126643389. The next prime is 1126643459. The reversal of 1126643453 is 3543466211.

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

It can be written as a sum of positive squares in 2 ways, for example, as 605799769 + 520843684 = 24613^2 + 22822^2 .

It is a cyclic number.

It is not a de Polignac number, because 1126643453 - 2⁶ = 1126643389 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 (1126643459) 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, 43332428 + ... + 43332453.

It is an arithmetic number, because the mean of its divisors is an integer number (303327087).

Almost surely, 2^1126643453 is an apocalyptic number.

1126643453 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1126643453 is a deficient number, since it is larger than the sum of its proper divisors (86664895).

1126643453 is an equidigital number, since it uses as much as digits as its factorization.

1126643453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86664894.

The product of its digits is 51840, while the sum is 35.

The square root of 1126643453 is about 33565.5098724867. The cubic root of 1126643453 is about 1040.5481125191.

The spelling of 1126643453 in words is "one billion, one hundred twenty-six million, six hundred forty-three thousand, four hundred fifty-three".