1123866001 has 2 divisors, whose sum is σ = 1123866002. Its totient is φ = 1123866000.

The previous prime is 1123865993. The next prime is 1123866011. The reversal of 1123866001 is 1006683211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 897062401 + 226803600 = 29951^2 + 15060^2 .

It is an emirp because it is prime and its reverse (1006683211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1123866001 - 2³ = 1123865993 is a prime.

It is not a weakly prime, because it can be changed into another prime (1123866011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561933000 + 561933001.

It is an arithmetic number, because the mean of its divisors is an integer number (561933001).

Almost surely, 2^1123866001 is an apocalyptic number.

It is an amenable number.

1123866001 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123866001 is an equidigital number, since it uses as much as digits as its factorization.

1123866001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 1123866001 is about 33524.1107413754. The cubic root of 1123866001 is about 1039.6923402697.

The spelling of 1123866001 in words is "one billion, one hundred twenty-three million, eight hundred sixty-six thousand, one".