2001890699 has 2 divisors, whose sum is σ = 2001890700. Its totient is φ = 2001890698.

The previous prime is 2001890687. The next prime is 2001890707. The reversal of 2001890699 is 9960981002.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2001890699 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (2001890659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000945349 + 1000945350.

It is an arithmetic number, because the mean of its divisors is an integer number (1000945350).

Almost surely, 2^2001890699 is an apocalyptic number.

2001890699 is a deficient number, since it is larger than the sum of its proper divisors (1).

2001890699 is an equidigital number, since it uses as much as digits as its factorization.

2001890699 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69984, while the sum is 44.

The square root of 2001890699 is about 44742.4932139460. The cubic root of 2001890699 is about 1260.3179467639.

The spelling of 2001890699 in words is "two billion, one million, eight hundred ninety thousand, six hundred ninety-nine".