20361469 has 2 divisors, whose sum is σ = 20361470. Its totient is φ = 20361468.

The previous prime is 20361457. The next prime is 20361479. The reversal of 20361469 is 96416302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16605625 + 3755844 = 4075^2 + 1938^2 .

It is a cyclic number.

It is not a de Polignac number, because 20361469 - 2⁵ = 20361437 is a prime.

It is a super-2 number, since 2×20361469² = 829178839675922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20361469.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20361409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10180734 + 10180735.

It is an arithmetic number, because the mean of its divisors is an integer number (10180735).

Almost surely, 2^20361469 is an apocalyptic number.

It is an amenable number.

20361469 is a deficient number, since it is larger than the sum of its proper divisors (1).

20361469 is an equidigital number, since it uses as much as digits as its factorization.

20361469 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 20361469 is about 4512.3684468359. The cubic root of 20361469 is about 273.0673039567.

The spelling of 20361469 in words is "twenty million, three hundred sixty-one thousand, four hundred sixty-nine".