2000191919953 has 2 divisors, whose sum is σ = 2000191919954. Its totient is φ = 2000191919952.

The previous prime is 2000191919941. The next prime is 2000191920007. The reversal of 2000191919953 is 3599191910002.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1819390927104 + 180800992849 = 1348848^2 + 425207^2 .

It is a cyclic number.

It is not a de Polignac number, because 2000191919953 - 2⁹ = 2000191919441 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2000191919897 and 2000191919906.

It is not a weakly prime, because it can be changed into another prime (2000191919353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000095959976 + 1000095959977.

It is an arithmetic number, because the mean of its divisors is an integer number (1000095959977).

Almost surely, 2^{2000191919953} is an apocalyptic number.

It is an amenable number.

2000191919953 is a deficient number, since it is larger than the sum of its proper divisors (1).

2000191919953 is an equidigital number, since it uses as much as digits as its factorization.

2000191919953 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 196830, while the sum is 49.

The spelling of 2000191919953 in words is "two trillion, one hundred ninety-one million, nine hundred nineteen thousand, nine hundred fifty-three".