1990899616613 has 8 divisors (see below), whose sum is σ = 2023611242496. Its totient is φ = 1958190375600.

The previous prime is 1990899616609. The next prime is 1990899616619. The reversal of 1990899616613 is 3166169980991.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1990899616613 - 2² = 1990899616609 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1990899616619) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1127720 + ... + 2292062.

It is an arithmetic number, because the mean of its divisors is an integer number (252951405312).

Almost surely, 2^{1990899616613} is an apocalyptic number.

It is an amenable number.

1990899616613 is a deficient number, since it is larger than the sum of its proper divisors (32711625883).

1990899616613 is a wasteful number, since it uses less digits than its factorization.

1990899616613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1192435.

The product of its (nonzero) digits is 34012224, while the sum is 68.

The spelling of 1990899616613 in words is "one trillion, nine hundred ninety billion, eight hundred ninety-nine million, six hundred sixteen thousand, six hundred thirteen".