19800290001 has 16 divisors (see below), whose sum is σ = 27141421568. Its totient is φ = 12830400000.

The previous prime is 19800289991. The next prime is 19800290011. The reversal of 19800290001 is 10009200891.

It is an interprime number because it is at equal distance from previous prime (19800289991) and next prime (19800290011).

It is not a de Polignac number, because 19800290001 - 2⁹ = 19800289489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19800290011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20001 + ... + 200001.

It is an arithmetic number, because the mean of its divisors is an integer number (1696338848).

Almost surely, 2^19800290001 is an apocalyptic number.

It is an amenable number.

19800290001 is a deficient number, since it is larger than the sum of its proper divisors (7341131567).

19800290001 is a wasteful number, since it uses less digits than its factorization.

19800290001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181032.

The product of its (nonzero) digits is 1296, while the sum is 30.

Adding to 19800290001 its reverse (10009200891), we get a palindrome (29809490892).

The spelling of 19800290001 in words is "nineteen billion, eight hundred million, two hundred ninety thousand, one".