1909006061 has 2 divisors, whose sum is σ = 1909006062. Its totient is φ = 1909006060.

The previous prime is 1909006051. The next prime is 1909006063. The reversal of 1909006061 is 1606009091.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1756112836 + 152893225 = 41906^2 + 12365^2 .

It is a cyclic number.

It is not a de Polignac number, because 1909006061 - 2³⁰ = 835264237 is a prime.

Together with 1909006063, it forms a pair of twin primes.

It is a Chen prime.

1909006061 is a strobogrammatic number because it is the same when read upside-down.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1909006063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 954503030 + 954503031.

It is an arithmetic number, because the mean of its divisors is an integer number (954503031).

Almost surely, 2^1909006061 is an apocalyptic number.

It is an amenable number.

1909006061 is a deficient number, since it is larger than the sum of its proper divisors (1).

1909006061 is an equidigital number, since it uses as much as digits as its factorization.

1909006061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2916, while the sum is 32.

The square root of 1909006061 is about 43692.1739102096. The cubic root of 1909006061 is about 1240.5161874935.

The spelling of 1909006061 in words is "one billion, nine hundred nine million, six thousand, sixty-one".