20161927 has 2 divisors, whose sum is σ = 20161928. Its totient is φ = 20161926.

The previous prime is 20161909. The next prime is 20161957. The reversal of 20161927 is 72916102.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20161927 - 2¹⁵ = 20129159 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20161895 and 20161904.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20161957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10080963 + 10080964.

It is an arithmetic number, because the mean of its divisors is an integer number (10080964).

Almost surely, 2^20161927 is an apocalyptic number.

20161927 is a deficient number, since it is larger than the sum of its proper divisors (1).

20161927 is an equidigital number, since it uses as much as digits as its factorization.

20161927 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 20161927 is about 4490.2034475066. The cubic root of 20161927 is about 272.1723559793.

It can be divided in two parts, 201 and 61927, that added together give a triangular number (62128 = T₃₅₂).

The spelling of 20161927 in words is "twenty million, one hundred sixty-one thousand, nine hundred twenty-seven".