1690094093 has 2 divisors, whose sum is σ = 1690094094. Its totient is φ = 1690094092.

The previous prime is 1690093963. The next prime is 1690094111. The reversal of 1690094093 is 3904900961.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1279707529 + 410386564 = 35773^2 + 20258^2 .

It is a cyclic number.

It is not a de Polignac number, because 1690094093 - 2¹² = 1690089997 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1690094093.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1690094293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 845047046 + 845047047.

It is an arithmetic number, because the mean of its divisors is an integer number (845047047).

Almost surely, 2^1690094093 is an apocalyptic number.

It is an amenable number.

1690094093 is a deficient number, since it is larger than the sum of its proper divisors (1).

1690094093 is an equidigital number, since it uses as much as digits as its factorization.

1690094093 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 52488, while the sum is 41.

The square root of 1690094093 is about 41110.7539823828. The cubic root of 1690094093 is about 1191.1605308587.

The spelling of 1690094093 in words is "one billion, six hundred ninety million, ninety-four thousand, ninety-three".