19798943941 has 16 divisors (see below), whose sum is σ = 23988567040. Its totient is φ = 15979213440.

The previous prime is 19798943933. The next prime is 19798943959. The reversal of 19798943941 is 14934989791.

It is a cyclic number.

It is not a de Polignac number, because 19798943941 - 2³ = 19798943933 is a prime.

It is a super-2 number, since 2×19798943941² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19798943921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1224936 + ... + 1240993.

It is an arithmetic number, because the mean of its divisors is an integer number (1499285440).

Almost surely, 2^19798943941 is an apocalyptic number.

It is an amenable number.

19798943941 is a deficient number, since it is larger than the sum of its proper divisors (4189623099).

19798943941 is a wasteful number, since it uses less digits than its factorization.

19798943941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2466004.

The product of its digits is 17635968, while the sum is 64.

The spelling of 19798943941 in words is "nineteen billion, seven hundred ninety-eight million, nine hundred forty-three thousand, nine hundred forty-one".