238018069 has 2 divisors, whose sum is σ = 238018070. Its totient is φ = 238018068.

The previous prime is 238018049. The next prime is 238018087. The reversal of 238018069 is 960810832.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 197543025 + 40475044 = 14055^2 + 6362^2 .

It is a cyclic number.

It is not a de Polignac number, because 238018069 - 2²³ = 229629461 is a prime.

It is a super-2 number, since 2×238018069² = 113305202340977522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (238018009) 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, 119009034 + 119009035.

It is an arithmetic number, because the mean of its divisors is an integer number (119009035).

Almost surely, 2^238018069 is an apocalyptic number.

It is an amenable number.

238018069 is a deficient number, since it is larger than the sum of its proper divisors (1).

238018069 is an equidigital number, since it uses as much as digits as its factorization.

238018069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 238018069 is about 15427.8342290809. The cubic root of 238018069 is about 619.7311260441.

It can be divided in two parts, 2380 and 18069, that added together give a square (20449 = 143²).

The spelling of 238018069 in words is "two hundred thirty-eight million, eighteen thousand, sixty-nine".