20341861 has 2 divisors, whose sum is σ = 20341862. Its totient is φ = 20341860.

The previous prime is 20341829. The next prime is 20341879. The reversal of 20341861 is 16814302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15256836 + 5085025 = 3906^2 + 2255^2 .

It is a cyclic number.

It is not a de Polignac number, because 20341861 - 2⁵ = 20341829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20341801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10170930 + 10170931.

It is an arithmetic number, because the mean of its divisors is an integer number (10170931).

Almost surely, 2^20341861 is an apocalyptic number.

It is an amenable number.

20341861 is a deficient number, since it is larger than the sum of its proper divisors (1).

20341861 is an equidigital number, since it uses as much as digits as its factorization.

20341861 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 20341861 is about 4510.1952285904. The cubic root of 20341861 is about 272.9796216233.

The spelling of 20341861 in words is "twenty million, three hundred forty-one thousand, eight hundred sixty-one".