438149167 has 2 divisors, whose sum is σ = 438149168. Its totient is φ = 438149166.

The previous prime is 438149161. The next prime is 438149209. The reversal of 438149167 is 761941834.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 438149167 - 2²³ = 429760559 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (438149161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 219074583 + 219074584.

It is an arithmetic number, because the mean of its divisors is an integer number (219074584).

Almost surely, 2^438149167 is an apocalyptic number.

438149167 is a deficient number, since it is larger than the sum of its proper divisors (1).

438149167 is an equidigital number, since it uses as much as digits as its factorization.

438149167 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145152, while the sum is 43.

The square root of 438149167 is about 20932.0129705674. The cubic root of 438149167 is about 759.5225342389.

The spelling of 438149167 in words is "four hundred thirty-eight million, one hundred forty-nine thousand, one hundred sixty-seven".