154413491 has 2 divisors, whose sum is σ = 154413492. Its totient is φ = 154413490.

The previous prime is 154413481. The next prime is 154413521. The reversal of 154413491 is 194314451.

It is a weak prime.

It is an emirp because it is prime and its reverse (194314451) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-154413491 is a prime.

It is not a weakly prime, because it can be changed into another prime (154413481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77206745 + 77206746.

It is an arithmetic number, because the mean of its divisors is an integer number (77206746).

Almost surely, 2^154413491 is an apocalyptic number.

154413491 is a deficient number, since it is larger than the sum of its proper divisors (1).

154413491 is an equidigital number, since it uses as much as digits as its factorization.

154413491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8640, while the sum is 32.

The square root of 154413491 is about 12426.3225050696. The cubic root of 154413491 is about 536.4901432387.

The spelling of 154413491 in words is "one hundred fifty-four million, four hundred thirteen thousand, four hundred ninety-one".