16504349 has 2 divisors, whose sum is σ = 16504350. Its totient is φ = 16504348.

The previous prime is 16504339. The next prime is 16504381. The reversal of 16504349 is 94340561.

It is an a-pointer prime, because the next prime (16504381) can be obtained adding 16504349 to its sum of digits (32).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15856324 + 648025 = 3982^2 + 805^2 .

It is a cyclic number.

It is not a de Polignac number, because 16504349 - 2⁴ = 16504333 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16504339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8252174 + 8252175.

It is an arithmetic number, because the mean of its divisors is an integer number (8252175).

Almost surely, 2^16504349 is an apocalyptic number.

It is an amenable number.

16504349 is a deficient number, since it is larger than the sum of its proper divisors (1).

16504349 is an equidigital number, since it uses as much as digits as its factorization.

16504349 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 16504349 is about 4062.5544919422. The cubic root of 16504349 is about 254.6045337474.

The spelling of 16504349 in words is "sixteen million, five hundred four thousand, three hundred forty-nine".