16163540 has 12 divisors (see below), whose sum is σ = 33943476. Its totient is φ = 6465408.

The previous prime is 16163533. The next prime is 16163573. The reversal of 16163540 is 4536161.

It can be written as a sum of positive squares in 2 ways, for example, as 2709316 + 13454224 = 1646^2 + 3668^2 .

It is a super-2 number, since 2×16163540² = 522520050663200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 404069 + ... + 404108.

It is an arithmetic number, because the mean of its divisors is an integer number (2828623).

Almost surely, 2^16163540 is an apocalyptic number.

16163540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16163540 is an abundant number, since it is smaller than the sum of its proper divisors (17779936).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16163540 is a wasteful number, since it uses less digits than its factorization.

16163540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 808186 (or 808184 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 16163540 is about 4020.3905282945. The cubic root of 16163540 is about 252.8398325914.

The spelling of 16163540 in words is "sixteen million, one hundred sixty-three thousand, five hundred forty".