154391011 has 2 divisors, whose sum is σ = 154391012. Its totient is φ = 154391010.

The previous prime is 154390997. The next prime is 154391033. The reversal of 154391011 is 110193451.

It is a weak prime.

It is an emirp because it is prime and its reverse (110193451) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-154391011 is a prime.

It is not a weakly prime, because it can be changed into another prime (154391051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77195505 + 77195506.

It is an arithmetic number, because the mean of its divisors is an integer number (77195506).

Almost surely, 2^154391011 is an apocalyptic number.

154391011 is a deficient number, since it is larger than the sum of its proper divisors (1).

154391011 is an equidigital number, since it uses as much as digits as its factorization.

154391011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 540, while the sum is 25.

The square root of 154391011 is about 12425.4179406570. The cubic root of 154391011 is about 536.4641073363.

The spelling of 154391011 in words is "one hundred fifty-four million, three hundred ninety-one thousand, eleven".