1128245801 has 2 divisors, whose sum is σ = 1128245802. Its totient is φ = 1128245800.

The previous prime is 1128245779. The next prime is 1128245843. The reversal of 1128245801 is 1085428211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1022464576 + 105781225 = 31976^2 + 10285^2 .

It is a cyclic number.

It is not a de Polignac number, because 1128245801 - 2²² = 1124051497 is a prime.

It is not a weakly prime, because it can be changed into another prime (1128245861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 564122900 + 564122901.

It is an arithmetic number, because the mean of its divisors is an integer number (564122901).

Almost surely, 2^1128245801 is an apocalyptic number.

It is an amenable number.

1128245801 is a deficient number, since it is larger than the sum of its proper divisors (1).

1128245801 is an equidigital number, since it uses as much as digits as its factorization.

1128245801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5120, while the sum is 32.

The square root of 1128245801 is about 33589.3703573020. The cubic root of 1128245801 is about 1041.0411790014.

The spelling of 1128245801 in words is "one billion, one hundred twenty-eight million, two hundred forty-five thousand, eight hundred one".