238449151 has 2 divisors, whose sum is σ = 238449152. Its totient is φ = 238449150.

The previous prime is 238449139. The next prime is 238449161. The reversal of 238449151 is 151944832.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 238449151 - 2¹³ = 238440959 is a prime.

It is a super-2 number, since 2×238449151² = 113715995225241602, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 238449151.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (238449121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119224575 + 119224576.

It is an arithmetic number, because the mean of its divisors is an integer number (119224576).

Almost surely, 2^238449151 is an apocalyptic number.

238449151 is a deficient number, since it is larger than the sum of its proper divisors (1).

238449151 is an equidigital number, since it uses as much as digits as its factorization.

238449151 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34560, while the sum is 37.

The square root of 238449151 is about 15441.7988265616. The cubic root of 238449151 is about 620.1050385686.

The spelling of 238449151 in words is "two hundred thirty-eight million, four hundred forty-nine thousand, one hundred fifty-one".