16494431 has 2 divisors, whose sum is σ = 16494432. Its totient is φ = 16494430.

The previous prime is 16494421. The next prime is 16494469. The reversal of 16494431 is 13449461.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16494431 - 2⁶ = 16494367 is a prime.

It is a super-2 number, since 2×16494431² = 544132508027522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16494421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8247215 + 8247216.

It is an arithmetic number, because the mean of its divisors is an integer number (8247216).

Almost surely, 2^16494431 is an apocalyptic number.

16494431 is a deficient number, since it is larger than the sum of its proper divisors (1).

16494431 is an equidigital number, since it uses as much as digits as its factorization.

16494431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10368, while the sum is 32.

The square root of 16494431 is about 4061.3336479536. Note that the first 3 decimals coincide. The cubic root of 16494431 is about 254.5535234803.

The spelling of 16494431 in words is "sixteen million, four hundred ninety-four thousand, four hundred thirty-one".