154338641 has 2 divisors, whose sum is σ = 154338642. Its totient is φ = 154338640.

The previous prime is 154338617. The next prime is 154338649. The reversal of 154338641 is 146833451.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 82428241 + 71910400 = 9079^2 + 8480^2 .

It is an emirp because it is prime and its reverse (146833451) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-154338641 is a prime.

It is a super-2 number, since 2×154338641² = 47640832211453762, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (154338649) 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, 77169320 + 77169321.

It is an arithmetic number, because the mean of its divisors is an integer number (77169321).

Almost surely, 2^154338641 is an apocalyptic number.

It is an amenable number.

154338641 is a deficient number, since it is larger than the sum of its proper divisors (1).

154338641 is an equidigital number, since it uses as much as digits as its factorization.

154338641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34560, while the sum is 35.

The square root of 154338641 is about 12423.3103881373. The cubic root of 154338641 is about 536.4034436092.

The spelling of 154338641 in words is "one hundred fifty-four million, three hundred thirty-eight thousand, six hundred forty-one".