19380541 has 2 divisors, whose sum is σ = 19380542. Its totient is φ = 19380540.

The previous prime is 19380523. The next prime is 19380593. The reversal of 19380541 is 14508391.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19316025 + 64516 = 4395^2 + 254^2 .

It is an emirp because it is prime and its reverse (14508391) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 19380541 - 2⁹ = 19380029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19380511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9690270 + 9690271.

It is an arithmetic number, because the mean of its divisors is an integer number (9690271).

Almost surely, 2^19380541 is an apocalyptic number.

It is an amenable number.

19380541 is a deficient number, since it is larger than the sum of its proper divisors (1).

19380541 is an equidigital number, since it uses as much as digits as its factorization.

19380541 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 19380541 is about 4402.3335857247. Note that the first 3 decimals coincide. The cubic root of 19380541 is about 268.6098691852.

The spelling of 19380541 in words is "nineteen million, three hundred eighty thousand, five hundred forty-one".