154673489 has 2 divisors, whose sum is σ = 154673490. Its totient is φ = 154673488.

The previous prime is 154673461. The next prime is 154673543. The reversal of 154673489 is 984376451.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 102718225 + 51955264 = 10135^2 + 7208^2 .

It is a cyclic number.

It is not a de Polignac number, because 154673489 - 2¹² = 154669393 is a prime.

It is not a weakly prime, because it can be changed into another prime (154673789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77336744 + 77336745.

It is an arithmetic number, because the mean of its divisors is an integer number (77336745).

Almost surely, 2^154673489 is an apocalyptic number.

It is an amenable number.

154673489 is a deficient number, since it is larger than the sum of its proper divisors (1).

154673489 is an equidigital number, since it uses as much as digits as its factorization.

154673489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 725760, while the sum is 47.

The square root of 154673489 is about 12436.7796876844. The cubic root of 154673489 is about 536.7910844507.

The spelling of 154673489 in words is "one hundred fifty-four million, six hundred seventy-three thousand, four hundred eighty-nine".