16494458 has 4 divisors (see below), whose sum is σ = 24741690. Its totient is φ = 8247228.

The previous prime is 16494431. The next prime is 16494469. The reversal of 16494458 is 85449461.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 16216729 + 277729 = 4027^2 + 527^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4123613 + ... + 4123616.

Almost surely, 2^16494458 is an apocalyptic number.

16494458 is a deficient number, since it is larger than the sum of its proper divisors (8247232).

16494458 is an equidigital number, since it uses as much as digits as its factorization.

16494458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8247231.

The product of its digits is 138240, while the sum is 41.

The square root of 16494458 is about 4061.3369719835. The cubic root of 16494458 is about 254.5536623745.

The spelling of 16494458 in words is "sixteen million, four hundred ninety-four thousand, four hundred fifty-eight".