19794541 has 8 divisors (see below), whose sum is σ = 21351960. Its totient is φ = 18242112.

The previous prime is 19794539. The next prime is 19794553. The reversal of 19794541 is 14549791.

It can be written as a sum of positive squares in 4 ways, for example, as 837225 + 18957316 = 915^2 + 4354^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 19794541 - 2¹ = 19794539 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 19794494 and 19794503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19794521) 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, 13731 + ... + 15103.

It is an arithmetic number, because the mean of its divisors is an integer number (2668995).

Almost surely, 2^19794541 is an apocalyptic number.

It is an amenable number.

19794541 is a deficient number, since it is larger than the sum of its proper divisors (1557419).

19794541 is a wasteful number, since it uses less digits than its factorization.

19794541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2495.

The product of its digits is 45360, while the sum is 40.

The square root of 19794541 is about 4449.1056404630. The cubic root of 19794541 is about 270.5090579091.

The spelling of 19794541 in words is "nineteen million, seven hundred ninety-four thousand, five hundred forty-one".