154838249 has 2 divisors, whose sum is σ = 154838250. Its totient is φ = 154838248.

The previous prime is 154838219. The next prime is 154838293. The reversal of 154838249 is 942838451.

It is a happy number.

154838249 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (154838293) can be obtained adding 154838249 to its sum of digits (44).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 154828249 + 10000 = 12443^2 + 100^2 .

It is an emirp because it is prime and its reverse (942838451) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 154838249 - 2¹² = 154834153 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (154838219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77419124 + 77419125.

It is an arithmetic number, because the mean of its divisors is an integer number (77419125).

Almost surely, 2^154838249 is an apocalyptic number.

It is an amenable number.

154838249 is a deficient number, since it is larger than the sum of its proper divisors (1).

154838249 is an equidigital number, since it uses as much as digits as its factorization.

154838249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 276480, while the sum is 44.

The square root of 154838249 is about 12443.4018258674. The cubic root of 154838249 is about 536.9816155175.

It can be divided in two parts, 15483 and 8249, that added together give a palindrome (23732).

The spelling of 154838249 in words is "one hundred fifty-four million, eight hundred thirty-eight thousand, two hundred forty-nine".