1622061109 has 2 divisors, whose sum is σ = 1622061110. Its totient is φ = 1622061108.

The previous prime is 1622061107. The next prime is 1622061149. The reversal of 1622061109 is 9011602261.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1311526225 + 310534884 = 36215^2 + 17622^2 .

It is a cyclic number.

It is not a de Polignac number, because 1622061109 - 2¹ = 1622061107 is a prime.

Together with 1622061107, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1622061107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 811030554 + 811030555.

It is an arithmetic number, because the mean of its divisors is an integer number (811030555).

Almost surely, 2^1622061109 is an apocalyptic number.

It is an amenable number.

1622061109 is a deficient number, since it is larger than the sum of its proper divisors (1).

1622061109 is an equidigital number, since it uses as much as digits as its factorization.

1622061109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 1622061109 is about 40274.8197885478. The cubic root of 1622061109 is about 1174.9581657657.

The spelling of 1622061109 in words is "one billion, six hundred twenty-two million, sixty-one thousand, one hundred nine".