19912041 has 8 divisors (see below), whose sum is σ = 29499360. Its totient is φ = 13274676.

The previous prime is 19912033. The next prime is 19912091. The reversal of 19912041 is 14021991.

It is not a de Polignac number, because 19912041 - 2³ = 19912033 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 737483 = 19912041 / (1 + 9 + 9 + 1 + 2 + 0 + 4 + 1).

It is a junction number, because it is equal to n+sod(n) for n = 19911996 and 19912014.

It is not an unprimeable number, because it can be changed into a prime (19912001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 368715 + ... + 368768.

It is an arithmetic number, because the mean of its divisors is an integer number (3687420).

Almost surely, 2^19912041 is an apocalyptic number.

It is an amenable number.

19912041 is a deficient number, since it is larger than the sum of its proper divisors (9587319).

19912041 is an equidigital number, since it uses as much as digits as its factorization.

19912041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 737492 (or 737486 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 27.

The square root of 19912041 is about 4462.2910035093. The cubic root of 19912041 is about 271.0432477740.

The spelling of 19912041 in words is "nineteen million, nine hundred twelve thousand, forty-one".