20369801 has 2 divisors, whose sum is σ = 20369802. Its totient is φ = 20369800.

The previous prime is 20369773. The next prime is 20369807. The reversal of 20369801 is 10896302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10883401 + 9486400 = 3299^2 + 3080^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20369801 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (20369807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10184900 + 10184901.

It is an arithmetic number, because the mean of its divisors is an integer number (10184901).

Almost surely, 2^20369801 is an apocalyptic number.

It is an amenable number.

20369801 is a deficient number, since it is larger than the sum of its proper divisors (1).

20369801 is an equidigital number, since it uses as much as digits as its factorization.

20369801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 20369801 is about 4513.2915926184. The cubic root of 20369801 is about 273.1045456460.

The spelling of 20369801 in words is "twenty million, three hundred sixty-nine thousand, eight hundred one".