238435691903 has 2 divisors, whose sum is σ = 238435691904. Its totient is φ = 238435691902.

The previous prime is 238435691887. The next prime is 238435691933. The reversal of 238435691903 is 309196534832.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 238435691903 - 2⁴ = 238435691887 is a prime.

It is a super-2 number, since 2×238435691903² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (238435691933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119217845951 + 119217845952.

It is an arithmetic number, because the mean of its divisors is an integer number (119217845952).

Almost surely, 2^238435691903 is an apocalyptic number.

238435691903 is a deficient number, since it is larger than the sum of its proper divisors (1).

238435691903 is an equidigital number, since it uses as much as digits as its factorization.

238435691903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4199040, while the sum is 53.

The spelling of 238435691903 in words is "two hundred thirty-eight billion, four hundred thirty-five million, six hundred ninety-one thousand, nine hundred three".