1123456801 has 2 divisors, whose sum is σ = 1123456802. Its totient is φ = 1123456800.

The previous prime is 1123456793. The next prime is 1123456811. The reversal of 1123456801 is 1086543211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 806616801 + 316840000 = 28401^2 + 17800^2 .

It is a cyclic number.

It is not a de Polignac number, because 1123456801 - 2³ = 1123456793 is a prime.

It is not a weakly prime, because it can be changed into another prime (1123456811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561728400 + 561728401.

It is an arithmetic number, because the mean of its divisors is an integer number (561728401).

Almost surely, 2^1123456801 is an apocalyptic number.

It is an amenable number.

1123456801 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123456801 is an equidigital number, since it uses as much as digits as its factorization.

1123456801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 1123456801 is about 33518.0071155789. The cubic root of 1123456801 is about 1039.5661408384.

The spelling of 1123456801 in words is "one billion, one hundred twenty-three million, four hundred fifty-six thousand, eight hundred one".