20191741 has 2 divisors, whose sum is σ = 20191742. Its totient is φ = 20191740.

The previous prime is 20191739. The next prime is 20191753. The reversal of 20191741 is 14719102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18619225 + 1572516 = 4315^2 + 1254^2 .

It is a cyclic number.

It is not a de Polignac number, because 20191741 - 2¹ = 20191739 is a prime.

It is a super-2 number, since 2×20191741² = 815412809222162, which contains 22 as substring.

Together with 20191739, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20191141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10095870 + 10095871.

It is an arithmetic number, because the mean of its divisors is an integer number (10095871).

Almost surely, 2^20191741 is an apocalyptic number.

It is an amenable number.

20191741 is a deficient number, since it is larger than the sum of its proper divisors (1).

20191741 is an equidigital number, since it uses as much as digits as its factorization.

20191741 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 25.

The square root of 20191741 is about 4493.5221152232. The cubic root of 20191741 is about 272.3064461743.

The spelling of 20191741 in words is "twenty million, one hundred ninety-one thousand, seven hundred forty-one".