438013811 has 2 divisors, whose sum is σ = 438013812. Its totient is φ = 438013810.

The previous prime is 438013769. The next prime is 438013831. The reversal of 438013811 is 118310834.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 438013811 - 2¹⁸ = 437751667 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (438013831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 219006905 + 219006906.

It is an arithmetic number, because the mean of its divisors is an integer number (219006906).

Almost surely, 2^438013811 is an apocalyptic number.

438013811 is a deficient number, since it is larger than the sum of its proper divisors (1).

438013811 is an equidigital number, since it uses as much as digits as its factorization.

438013811 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 438013811 is about 20928.7794914085. The cubic root of 438013811 is about 759.4443139065. Note that the first 3 decimals are identical.

The spelling of 438013811 in words is "four hundred thirty-eight million, thirteen thousand, eight hundred eleven".