238019489 has 2 divisors, whose sum is σ = 238019490. Its totient is φ = 238019488.

The previous prime is 238019461. The next prime is 238019497. The reversal of 238019489 is 984910832.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 137358400 + 100661089 = 11720^2 + 10033^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-238019489 is a prime.

It is a super-2 number, since 2×238019489² = 113306554287642242, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (238019459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119009744 + 119009745.

It is an arithmetic number, because the mean of its divisors is an integer number (119009745).

Almost surely, 2^238019489 is an apocalyptic number.

It is an amenable number.

238019489 is a deficient number, since it is larger than the sum of its proper divisors (1).

238019489 is an equidigital number, since it uses as much as digits as its factorization.

238019489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 124416, while the sum is 44.

The square root of 238019489 is about 15427.8802497297. The cubic root of 238019489 is about 619.7323584666.

The spelling of 238019489 in words is "two hundred thirty-eight million, nineteen thousand, four hundred eighty-nine".