1690930069 has 2 divisors, whose sum is σ = 1690930070. Its totient is φ = 1690930068.

The previous prime is 1690930001. The next prime is 1690930097. The reversal of 1690930069 is 9600390961.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1379231044 + 311699025 = 37138^2 + 17655^2 .

It is a cyclic number.

It is not a de Polignac number, because 1690930069 - 2¹¹ = 1690928021 is a prime.

It is a super-2 number, since 2×1690930069² = 5718488996496689522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1690930369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 845465034 + 845465035.

It is an arithmetic number, because the mean of its divisors is an integer number (845465035).

Almost surely, 2^1690930069 is an apocalyptic number.

It is an amenable number.

1690930069 is a deficient number, since it is larger than the sum of its proper divisors (1).

1690930069 is an equidigital number, since it uses as much as digits as its factorization.

1690930069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 78732, while the sum is 43.

The square root of 1690930069 is about 41120.9200894143. The cubic root of 1690930069 is about 1191.3568941822.

The spelling of 1690930069 in words is "one billion, six hundred ninety million, nine hundred thirty thousand, sixty-nine".