16505349 has 16 divisors (see below), whose sum is σ = 25339008. Its totient is φ = 9361152.

The previous prime is 16505347. The next prime is 16505371. The reversal of 16505349 is 94350561.

It is a happy number.

It is not a de Polignac number, because 16505349 - 2¹ = 16505347 is a prime.

It is a super-2 number, since 2×16505349² = 544853091223602, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16505347) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9 + ... + 5745.

It is an arithmetic number, because the mean of its divisors is an integer number (1583688).

Almost surely, 2^16505349 is an apocalyptic number.

It is an amenable number.

16505349 is a deficient number, since it is larger than the sum of its proper divisors (8833659).

16505349 is a wasteful number, since it uses less digits than its factorization.

16505349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5884.

The product of its (nonzero) digits is 16200, while the sum is 33.

The square root of 16505349 is about 4062.6775653502. The cubic root of 16505349 is about 254.6096758141.

The spelling of 16505349 in words is "sixteen million, five hundred five thousand, three hundred forty-nine".