20930167 has 2 divisors, whose sum is σ = 20930168. Its totient is φ = 20930166.

The previous prime is 20930159. The next prime is 20930171. The reversal of 20930167 is 76103902.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20930167 - 2³ = 20930159 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20930467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10465083 + 10465084.

It is an arithmetic number, because the mean of its divisors is an integer number (10465084).

Almost surely, 2^20930167 is an apocalyptic number.

20930167 is a deficient number, since it is larger than the sum of its proper divisors (1).

20930167 is an equidigital number, since it uses as much as digits as its factorization.

20930167 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2268, while the sum is 28.

The square root of 20930167 is about 4574.9499450814. The cubic root of 20930167 is about 275.5862622290.

The spelling of 20930167 in words is "twenty million, nine hundred thirty thousand, one hundred sixty-seven".