19885941 has 6 divisors (see below), whose sum is σ = 28724150. Its totient is φ = 13257288.

The previous prime is 19885919. The next prime is 19885949. The reversal of 19885941 is 14958891.

It can be written as a sum of positive squares in only one way, i.e., 19766916 + 119025 = 4446^2 + 345^2 .

It is not a de Polignac number, because 19885941 - 2⁷ = 19885813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19885949) 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, 1104766 + ... + 1104783.

Almost surely, 2^19885941 is an apocalyptic number.

It is an amenable number.

19885941 is a deficient number, since it is larger than the sum of its proper divisors (8838209).

19885941 is a wasteful number, since it uses less digits than its factorization.

19885941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2209555 (or 2209552 counting only the distinct ones).

The product of its digits is 103680, while the sum is 45.

The square root of 19885941 is about 4459.3655378316. The cubic root of 19885941 is about 270.9247713556.

The spelling of 19885941 in words is "nineteen million, eight hundred eighty-five thousand, nine hundred forty-one".