2090218769 has 2 divisors, whose sum is σ = 2090218770. Its totient is φ = 2090218768.

The previous prime is 2090218751. The next prime is 2090218789. The reversal of 2090218769 is 9678120902.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1585632400 + 504586369 = 39820^2 + 22463^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2090218769 is a prime.

It is a super-2 number, since 2×2090218769² = 8738029004559750722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2090218789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1045109384 + 1045109385.

It is an arithmetic number, because the mean of its divisors is an integer number (1045109385).

Almost surely, 2^2090218769 is an apocalyptic number.

It is an amenable number.

2090218769 is a deficient number, since it is larger than the sum of its proper divisors (1).

2090218769 is an equidigital number, since it uses as much as digits as its factorization.

2090218769 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108864, while the sum is 44.

The square root of 2090218769 is about 45718.9104091513. The cubic root of 2090218769 is about 1278.5878732227.

The spelling of 2090218769 in words is "two billion, ninety million, two hundred eighteen thousand, seven hundred sixty-nine".