438168361 has 2 divisors, whose sum is σ = 438168362. Its totient is φ = 438168360.

The previous prime is 438168301. The next prime is 438168389. The reversal of 438168361 is 163861834.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 421521961 + 16646400 = 20531^2 + 4080^2 .

It is a cyclic number.

It is not a de Polignac number, because 438168361 - 2⁷ = 438168233 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (438168301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 219084180 + 219084181.

It is an arithmetic number, because the mean of its divisors is an integer number (219084181).

Almost surely, 2^438168361 is an apocalyptic number.

It is an amenable number.

438168361 is a deficient number, since it is larger than the sum of its proper divisors (1).

438168361 is an equidigital number, since it uses as much as digits as its factorization.

438168361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 82944, while the sum is 40.

The square root of 438168361 is about 20932.4714498790. The cubic root of 438168361 is about 759.5336248778.

The spelling of 438168361 in words is "four hundred thirty-eight million, one hundred sixty-eight thousand, three hundred sixty-one".