16481537 has 8 divisors (see below), whose sum is σ = 16937856. Its totient is φ = 16029712.

The previous prime is 16481527. The next prime is 16481557. The reversal of 16481537 is 73518461.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16481537 - 2²⁰ = 15432961 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16481497 and 16481506.

It is not an unprimeable number, because it can be changed into a prime (16481527) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7118 + ... + 9144.

It is an arithmetic number, because the mean of its divisors is an integer number (2117232).

Almost surely, 2^16481537 is an apocalyptic number.

It is an amenable number.

16481537 is a deficient number, since it is larger than the sum of its proper divisors (456319).

16481537 is a wasteful number, since it uses less digits than its factorization.

16481537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2247.

The product of its digits is 20160, while the sum is 35.

The square root of 16481537 is about 4059.7459280108. The cubic root of 16481537 is about 254.4871764658.

Adding to 16481537 its reverse (73518461), we get a palindrome (89999998).

The spelling of 16481537 in words is "sixteen million, four hundred eighty-one thousand, five hundred thirty-seven".