238236483421 has 2 divisors, whose sum is σ = 238236483422. Its totient is φ = 238236483420.

The previous prime is 238236483389. The next prime is 238236483487. The reversal of 238236483421 is 124384632832.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 178768296100 + 59468187321 = 422810^2 + 243861^2 .

It is a cyclic number.

It is not a de Polignac number, because 238236483421 - 2⁵ = 238236483389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (238236481421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119118241710 + 119118241711.

It is an arithmetic number, because the mean of its divisors is an integer number (119118241711).

Almost surely, 2^238236483421 is an apocalyptic number.

It is an amenable number.

238236483421 is a deficient number, since it is larger than the sum of its proper divisors (1).

238236483421 is an equidigital number, since it uses as much as digits as its factorization.

238236483421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1327104, while the sum is 46.

The spelling of 238236483421 in words is "two hundred thirty-eight billion, two hundred thirty-six million, four hundred eighty-three thousand, four hundred twenty-one".