16485931 has 16 divisors (see below), whose sum is σ = 20659968. Its totient is φ = 12780000.

The previous prime is 16485929. The next prime is 16485961. The reversal of 16485931 is 13958461.

It is a cyclic number.

It is not a de Polignac number, because 16485931 - 2¹ = 16485929 is a prime.

It is a super-2 number, since 2×16485931² = 543571841873522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16485961) 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, 18901 + ... + 19753.

It is an arithmetic number, because the mean of its divisors is an integer number (1291248).

Almost surely, 2^16485931 is an apocalyptic number.

16485931 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

16485931 is a deficient number, since it is larger than the sum of its proper divisors (4174037).

16485931 is a wasteful number, since it uses less digits than its factorization.

16485931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1122.

The product of its digits is 25920, while the sum is 37.

The square root of 16485931 is about 4060.2870588174. The cubic root of 16485931 is about 254.5097899978.

The spelling of 16485931 in words is "sixteen million, four hundred eighty-five thousand, nine hundred thirty-one".