1227369641 has 2 divisors, whose sum is σ = 1227369642. Its totient is φ = 1227369640.

The previous prime is 1227369623. The next prime is 1227369643. The reversal of 1227369641 is 1469637221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 739622416 + 487747225 = 27196^2 + 22085^2 .

It is a cyclic number.

It is not a de Polignac number, because 1227369641 - 2²² = 1223175337 is a prime.

It is a Sophie Germain prime.

Together with 1227369643, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1227369643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 613684820 + 613684821.

It is an arithmetic number, because the mean of its divisors is an integer number (613684821).

Almost surely, 2^1227369641 is an apocalyptic number.

It is an amenable number.

1227369641 is a deficient number, since it is larger than the sum of its proper divisors (1).

1227369641 is an equidigital number, since it uses as much as digits as its factorization.

1227369641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108864, while the sum is 41.

The square root of 1227369641 is about 35033.8356592595. The cubic root of 1227369641 is about 1070.6769643953.

The spelling of 1227369641 in words is "one billion, two hundred twenty-seven million, three hundred sixty-nine thousand, six hundred forty-one".