16041381 has 4 divisors (see below), whose sum is σ = 21388512. Its totient is φ = 10694252.

The previous prime is 16041371. The next prime is 16041397. The reversal of 16041381 is 18314061.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 18314061 = 3 ⋅6104687.

It is a cyclic number.

It is not a de Polignac number, because 16041381 - 2¹⁰ = 16040357 is a prime.

It is a super-2 number, since 2×16041381² = 514651808774322, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16041331) by changing a digit.

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, 2673561 + ... + 2673566.

It is an arithmetic number, because the mean of its divisors is an integer number (5347128).

Almost surely, 2^16041381 is an apocalyptic number.

It is an amenable number.

16041381 is a deficient number, since it is larger than the sum of its proper divisors (5347131).

16041381 is an equidigital number, since it uses as much as digits as its factorization.

16041381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5347130.

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 16041381 is about 4005.1692848118. The cubic root of 16041381 is about 252.2012596044.

The spelling of 16041381 in words is "sixteen million, forty-one thousand, three hundred eighty-one".