16000493 has 4 divisors (see below), whose sum is σ = 16009020. Its totient is φ = 15991968.

The previous prime is 16000487. The next prime is 16000499. The reversal of 16000493 is 39400061.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 39400061 = 653 ⋅60337.

It is an interprime number because it is at equal distance from previous prime (16000487) and next prime (16000499).

It can be written as a sum of positive squares in 2 ways, for example, as 3736489 + 12264004 = 1933^2 + 3502^2 .

It is a cyclic number.

It is not a de Polignac number, because 16000493 - 2⁴ = 16000477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16000499) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80 + ... + 5657.

It is an arithmetic number, because the mean of its divisors is an integer number (4002255).

Almost surely, 2^16000493 is an apocalyptic number.

It is an amenable number.

16000493 is a deficient number, since it is larger than the sum of its proper divisors (8527).

16000493 is an equidigital number, since it uses as much as digits as its factorization.

16000493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8526.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 16000493 is about 4000.0616245253. The cubic root of 16000493 is about 251.9867980402.

The spelling of 16000493 in words is "sixteen million, four hundred ninety-three", and thus it is an aban number.