2061808699 has 2 divisors, whose sum is σ = 2061808700. Its totient is φ = 2061808698.

The previous prime is 2061808681. The next prime is 2061808733. The reversal of 2061808699 is 9968081602.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2061808699 - 2¹¹ = 2061806651 is a prime.

It is a super-2 number, since 2×2061808699² = 8502110222544145202, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2061808649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1030904349 + 1030904350.

It is an arithmetic number, because the mean of its divisors is an integer number (1030904350).

Almost surely, 2^2061808699 is an apocalyptic number.

2061808699 is a deficient number, since it is larger than the sum of its proper divisors (1).

2061808699 is an equidigital number, since it uses as much as digits as its factorization.

2061808699 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 373248, while the sum is 49.

The square root of 2061808699 is about 45407.1437000831. The cubic root of 2061808699 is about 1272.7686100317.

The spelling of 2061808699 in words is "two billion, sixty-one million, eight hundred eight thousand, six hundred ninety-nine".