16513039 has 4 divisors (see below), whose sum is σ = 16579080. Its totient is φ = 16447000.

The previous prime is 16513031. The next prime is 16513073. The reversal of 16513039 is 93031561.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93031561 = 7 ⋅13290223.

It is a cyclic number.

It is not a de Polignac number, because 16513039 - 2³ = 16513031 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16512998 and 16513016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16513031) 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, 32644 + ... + 33145.

It is an arithmetic number, because the mean of its divisors is an integer number (4144770).

Almost surely, 2^16513039 is an apocalyptic number.

16513039 is a deficient number, since it is larger than the sum of its proper divisors (66041).

16513039 is an equidigital number, since it uses as much as digits as its factorization.

16513039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66040.

The product of its (nonzero) digits is 2430, while the sum is 28.

The square root of 16513039 is about 4063.6238753113. The cubic root of 16513039 is about 254.6492113694.

The spelling of 16513039 in words is "sixteen million, five hundred thirteen thousand, thirty-nine".