16000013 has 4 divisors (see below), whose sum is σ = 16037568. Its totient is φ = 15962460.

The previous prime is 15999989. The next prime is 16000057. The reversal of 16000013 is 31000061.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31000061 = 17 ⋅1823533.

It is a cyclic number.

It is not a de Polignac number, because 16000013 - 2⁸ = 15999757 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 15999958 and 16000003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16000813) 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, 18131 + ... + 18992.

It is an arithmetic number, because the mean of its divisors is an integer number (4009392).

Almost surely, 2^16000013 is an apocalyptic number.

It is an amenable number.

16000013 is a deficient number, since it is larger than the sum of its proper divisors (37555).

16000013 is an equidigital number, since it uses as much as digits as its factorization.

16000013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37554.

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 16000013 is about 4000.0016249997. The cubic root of 16000013 is about 251.9842782247.

Adding to 16000013 its reverse (31000061), we get a palindrome (47000074).

The spelling of 16000013 in words is "sixteen million, thirteen", and thus it is an aban number and an uban number.