16378273 has 2 divisors, whose sum is σ = 16378274. Its totient is φ = 16378272.

The previous prime is 16378267. The next prime is 16378283. The reversal of 16378273 is 37287361.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16378209 + 64 = 4047^2 + 8^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16378273 is a prime.

It is not a weakly prime, because it can be changed into another prime (16378253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8189136 + 8189137.

It is an arithmetic number, because the mean of its divisors is an integer number (8189137).

Almost surely, 2^16378273 is an apocalyptic number.

It is an amenable number.

16378273 is a deficient number, since it is larger than the sum of its proper divisors (1).

16378273 is an equidigital number, since it uses as much as digits as its factorization.

16378273 is an evil number, because the sum of its binary digits is even.

The product of its digits is 42336, while the sum is 37.

The square root of 16378273 is about 4047.0079070839. The cubic root of 16378273 is about 253.9545716180.

The spelling of 16378273 in words is "sixteen million, three hundred seventy-eight thousand, two hundred seventy-three".