16154449 has 2 divisors, whose sum is σ = 16154450. Its totient is φ = 16154448.

The previous prime is 16154443. The next prime is 16154491. The reversal of 16154449 is 94445161.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16000000 + 154449 = 4000^2 + 393^2 .

It is an emirp because it is prime and its reverse (94445161) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16154449 - 2⁷ = 16154321 is a prime.

It is not a weakly prime, because it can be changed into another prime (16154443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8077224 + 8077225.

It is an arithmetic number, because the mean of its divisors is an integer number (8077225).

Almost surely, 2^16154449 is an apocalyptic number.

It is an amenable number.

16154449 is a deficient number, since it is larger than the sum of its proper divisors (1).

16154449 is an equidigital number, since it uses as much as digits as its factorization.

16154449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17280, while the sum is 34.

The square root of 16154449 is about 4019.2597577166. The cubic root of 16154449 is about 252.7924214016.

It can be divided in two parts, 16 and 154449, that multiplied together give a square (2471184 = 1572²).

The spelling of 16154449 in words is "sixteen million, one hundred fifty-four thousand, four hundred forty-nine".