20190191941 has 4 divisors (see below), whose sum is σ = 20191051084. Its totient is φ = 20189332800.

The previous prime is 20190191927. The next prime is 20190191947. The reversal of 20190191941 is 14919109102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11896264900 + 8293927041 = 109070^2 + 91071^2 .

It is a cyclic number.

It is not a de Polignac number, because 20190191941 - 2⁹ = 20190191429 is a prime.

It is a super-2 number, since 2×20190191941² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20190191941.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20190191947) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 393300 + ... + 441661.

It is an arithmetic number, because the mean of its divisors is an integer number (5047762771).

Almost surely, 2^20190191941 is an apocalyptic number.

It is an amenable number.

20190191941 is a deficient number, since it is larger than the sum of its proper divisors (859143).

20190191941 is an equidigital number, since it uses as much as digits as its factorization.

20190191941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 859142.

The product of its (nonzero) digits is 5832, while the sum is 37.

The spelling of 20190191941 in words is "twenty billion, one hundred ninety million, one hundred ninety-one thousand, nine hundred forty-one".