19650347841 has 4 divisors (see below), whose sum is σ = 26200463792. Its totient is φ = 13100231892.

The previous prime is 19650347839. The next prime is 19650347863. The reversal of 19650347841 is 14874305691.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 19650347841 - 2¹ = 19650347839 is a prime.

It is a super-2 number, since 2×19650347841² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19650347341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3275057971 + ... + 3275057976.

It is an arithmetic number, because the mean of its divisors is an integer number (6550115948).

Almost surely, 2^19650347841 is an apocalyptic number.

It is an amenable number.

19650347841 is a deficient number, since it is larger than the sum of its proper divisors (6550115951).

19650347841 is an equidigital number, since it uses as much as digits as its factorization.

19650347841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6550115950.

The product of its (nonzero) digits is 725760, while the sum is 48.

The spelling of 19650347841 in words is "nineteen billion, six hundred fifty million, three hundred forty-seven thousand, eight hundred forty-one".