1611227089 has 2 divisors, whose sum is σ = 1611227090. Its totient is φ = 1611227088.

The previous prime is 1611227087. The next prime is 1611227129. The reversal of 1611227089 is 9807221161.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1226400400 + 384826689 = 35020^2 + 19617^2 .

It is a cyclic number.

It is not a de Polignac number, because 1611227089 - 2¹ = 1611227087 is a prime.

Together with 1611227087, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1611227081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 805613544 + 805613545.

It is an arithmetic number, because the mean of its divisors is an integer number (805613545).

Almost surely, 2^1611227089 is an apocalyptic number.

It is an amenable number.

1611227089 is a deficient number, since it is larger than the sum of its proper divisors (1).

1611227089 is an equidigital number, since it uses as much as digits as its factorization.

1611227089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 37.

The square root of 1611227089 is about 40140.0932858906. The cubic root of 1611227089 is about 1172.3364053603.

The spelling of 1611227089 in words is "one billion, six hundred eleven million, two hundred twenty-seven thousand, eighty-nine".