20191141 has 2 divisors, whose sum is σ = 20191142. Its totient is φ = 20191140.

The previous prime is 20191133. The next prime is 20191151. The reversal of 20191141 is 14119102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11902500 + 8288641 = 3450^2 + 2879^2 .

It is a cyclic number.

It is not a de Polignac number, because 20191141 - 2³ = 20191133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20191151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10095570 + 10095571.

It is an arithmetic number, because the mean of its divisors is an integer number (10095571).

Almost surely, 2^20191141 is an apocalyptic number.

It is an amenable number.

20191141 is a deficient number, since it is larger than the sum of its proper divisors (1).

20191141 is an equidigital number, since it uses as much as digits as its factorization.

20191141 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 19.

The square root of 20191141 is about 4493.4553519535. The cubic root of 20191141 is about 272.3037489413.

It can be divided in two parts, 2019 and 1141, that added together give a triangular number (3160 = T₇₉).

The spelling of 20191141 in words is "twenty million, one hundred ninety-one thousand, one hundred forty-one".