238503893 has 2 divisors, whose sum is σ = 238503894. Its totient is φ = 238503892.

The previous prime is 238503883. The next prime is 238503907. The reversal of 238503893 is 398305832.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 155201764 + 83302129 = 12458^2 + 9127^2 .

It is a cyclic number.

It is not a de Polignac number, because 238503893 - 2⁴ = 238503877 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 238503893.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (238503823) 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, 119251946 + 119251947.

It is an arithmetic number, because the mean of its divisors is an integer number (119251947).

Almost surely, 2^238503893 is an apocalyptic number.

It is an amenable number.

238503893 is a deficient number, since it is larger than the sum of its proper divisors (1).

238503893 is an equidigital number, since it uses as much as digits as its factorization.

238503893 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 155520, while the sum is 41.

The square root of 238503893 is about 15443.5712514949. The cubic root of 238503893 is about 620.1524885071.

The spelling of 238503893 in words is "two hundred thirty-eight million, five hundred three thousand, eight hundred ninety-three".