19868941 has 4 divisors (see below), whose sum is σ = 20732832. Its totient is φ = 19005052.

The previous prime is 19868939. The next prime is 19868957. The reversal of 19868941 is 14986891.

19868941 = T₃₆₃₈ + T₃₆₃₉ + T₃₆₄₀.

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: 14986891 = 569 ⋅26339.

It is a cyclic number.

It is not a de Polignac number, because 19868941 - 2¹ = 19868939 is a prime.

It is a super-2 number, since 2×19868941² = 789549632922962, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 19868891 and 19868900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19868141) 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, 431911 + ... + 431956.

It is an arithmetic number, because the mean of its divisors is an integer number (5183208).

Almost surely, 2^19868941 is an apocalyptic number.

19868941 is the 3640-th centered triangular number.

It is an amenable number.

19868941 is a deficient number, since it is larger than the sum of its proper divisors (863891).

19868941 is an equidigital number, since it uses as much as digits as its factorization.

19868941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 863890.

The product of its digits is 124416, while the sum is 46.

The square root of 19868941 is about 4457.4590295369. The cubic root of 19868941 is about 270.8475470463.

The spelling of 19868941 in words is "nineteen million, eight hundred sixty-eight thousand, nine hundred forty-one".