1940998699 has 2 divisors, whose sum is σ = 1940998700. Its totient is φ = 1940998698.

The previous prime is 1940998667. The next prime is 1940998729. The reversal of 1940998699 is 9968990491.

It is a strong prime.

It is an emirp because it is prime and its reverse (9968990491) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1940998699 - 2⁵ = 1940998667 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1940998699.

It is not a weakly prime, because it can be changed into another prime (1940993699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 970499349 + 970499350.

It is an arithmetic number, because the mean of its divisors is an integer number (970499350).

Almost surely, 2^1940998699 is an apocalyptic number.

1940998699 is a deficient number, since it is larger than the sum of its proper divisors (1).

1940998699 is an equidigital number, since it uses as much as digits as its factorization.

1940998699 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11337408, while the sum is 64.

The square root of 1940998699 is about 44056.7667787821. The cubic root of 1940998699 is about 1247.4076834189.

The spelling of 1940998699 in words is "one billion, nine hundred forty million, nine hundred ninety-eight thousand, six hundred ninety-nine".