19764941 has 8 divisors (see below), whose sum is σ = 22971840. Its totient is φ = 16653888.

The previous prime is 19764929. The next prime is 19764947. The reversal of 19764941 is 14946791.

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 19764941 - 2¹⁰ = 19763917 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 (19764947) 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, 23516 + ... + 24341.

It is an arithmetic number, because the mean of its divisors is an integer number (2871480).

Almost surely, 2^19764941 is an apocalyptic number.

It is an amenable number.

19764941 is a deficient number, since it is larger than the sum of its proper divisors (3206899).

19764941 is an equidigital number, since it uses as much as digits as its factorization.

19764941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47923.

The product of its digits is 54432, while the sum is 41.

The square root of 19764941 is about 4445.7778846901. Note that the first 3 decimals coincide. The cubic root of 19764941 is about 270.3741543417.

The spelling of 19764941 in words is "nineteen million, seven hundred sixty-four thousand, nine hundred forty-one".