238551149 has 2 divisors, whose sum is σ = 238551150. Its totient is φ = 238551148.

The previous prime is 238551133. The next prime is 238551163. The reversal of 238551149 is 941155832.

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., 191628649 + 46922500 = 13843^2 + 6850^2 .

It is a cyclic number.

It is not a de Polignac number, because 238551149 - 2⁴ = 238551133 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (238551109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119275574 + 119275575.

It is an arithmetic number, because the mean of its divisors is an integer number (119275575).

Almost surely, 2^238551149 is an apocalyptic number.

It is an amenable number.

238551149 is a deficient number, since it is larger than the sum of its proper divisors (1).

238551149 is an equidigital number, since it uses as much as digits as its factorization.

238551149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 43200, while the sum is 38.

The square root of 238551149 is about 15445.1011327217. The cubic root of 238551149 is about 620.1934438004.

The spelling of 238551149 in words is "two hundred thirty-eight million, five hundred fifty-one thousand, one hundred forty-nine".