16408513 has 4 divisors (see below), whose sum is σ = 17900208. Its totient is φ = 14916820.

The previous prime is 16408493. The next prime is 16408529. The reversal of 16408513 is 31580461.

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.

It is a cyclic number.

It is not a de Polignac number, because 16408513 - 2⁵ = 16408481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16408543) 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, 745831 + ... + 745852.

It is an arithmetic number, because the mean of its divisors is an integer number (4475052).

Almost surely, 2^16408513 is an apocalyptic number.

It is an amenable number.

16408513 is a deficient number, since it is larger than the sum of its proper divisors (1491695).

16408513 is a wasteful number, since it uses less digits than its factorization.

16408513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1491694.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 16408513 is about 4050.7422776573. The cubic root of 16408513 is about 254.1107717394.

Adding to 16408513 its reverse (31580461), we get a palindrome (47988974).

It can be divided in two parts, 1640 and 8513, that added together give a triangular number (10153 = T₁₄₂).

The spelling of 16408513 in words is "sixteen million, four hundred eight thousand, five hundred thirteen".