1906696061 has 2 divisors, whose sum is σ = 1906696062. Its totient is φ = 1906696060.

The previous prime is 1906696009. The next prime is 1906696091. The reversal of 1906696061 is 1606966091.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1488493561 + 418202500 = 38581^2 + 20450^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1906696061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1906696091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 953348030 + 953348031.

It is an arithmetic number, because the mean of its divisors is an integer number (953348031).

Almost surely, 2^1906696061 is an apocalyptic number.

It is an amenable number.

1906696061 is a deficient number, since it is larger than the sum of its proper divisors (1).

1906696061 is an equidigital number, since it uses as much as digits as its factorization.

1906696061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 104976, while the sum is 44.

The square root of 1906696061 is about 43665.7309683463. The cubic root of 1906696061 is about 1240.0156217682.

The spelling of 1906696061 in words is "one billion, nine hundred six million, six hundred ninety-six thousand, sixty-one".