16144378 has 4 divisors (see below), whose sum is σ = 24216570. Its totient is φ = 8072188.

The previous prime is 16144369. The next prime is 16144399. The reversal of 16144378 is 87344161.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 87344161 = 37 ⋅2360653.

It can be written as a sum of positive squares in only one way, i.e., 13593969 + 2550409 = 3687^2 + 1597^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4036093 + ... + 4036096.

Almost surely, 2^16144378 is an apocalyptic number.

16144378 is a deficient number, since it is larger than the sum of its proper divisors (8072192).

16144378 is an equidigital number, since it uses as much as digits as its factorization.

16144378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8072191.

The product of its digits is 16128, while the sum is 34.

The square root of 16144378 is about 4018.0067197555. The cubic root of 16144378 is about 252.7398785653.

The spelling of 16144378 in words is "sixteen million, one hundred forty-four thousand, three hundred seventy-eight".