16213941 has 6 divisors (see below), whose sum is σ = 23420150. Its totient is φ = 10809288.

The previous prime is 16213921. The next prime is 16213943. The reversal of 16213941 is 14931261.

16213941 is a `hidden beast` number, since 1 + 621 + 39 + 4 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 8678916 + 7535025 = 2946^2 + 2745^2 .

It is not a de Polignac number, because 16213941 - 2²³ = 7825333 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16213943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 900766 + ... + 900783.

Almost surely, 2^16213941 is an apocalyptic number.

It is an amenable number.

16213941 is a deficient number, since it is larger than the sum of its proper divisors (7206209).

16213941 is a wasteful number, since it uses less digits than its factorization.

16213941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1801555 (or 1801552 counting only the distinct ones).

The product of its digits is 1296, while the sum is 27.

The square root of 16213941 is about 4026.6538217234. The cubic root of 16213941 is about 253.1023608468.

The spelling of 16213941 in words is "sixteen million, two hundred thirteen thousand, nine hundred forty-one".