15981941 has 4 divisors (see below), whose sum is σ = 16676832. Its totient is φ = 15287052.

The previous prime is 15981893. The next prime is 15981947. The reversal of 15981941 is 14918951.

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: 14918951 = 151 ⋅98801.

It is a cyclic number.

It is not a de Polignac number, because 15981941 - 2⁶ = 15981877 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 15981895 and 15981904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15981947) 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 3 ways as a sum of consecutive naturals, for example, 347411 + ... + 347456.

It is an arithmetic number, because the mean of its divisors is an integer number (4169208).

Almost surely, 2^15981941 is an apocalyptic number.

It is an amenable number.

15981941 is a deficient number, since it is larger than the sum of its proper divisors (694891).

15981941 is an equidigital number, since it uses as much as digits as its factorization.

15981941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 694890.

The product of its digits is 12960, while the sum is 38.

The square root of 15981941 is about 3997.7419876725. The cubic root of 15981941 is about 251.8893704793.

The spelling of 15981941 in words is "fifteen million, nine hundred eighty-one thousand, nine hundred forty-one".