19739141 has 2 divisors, whose sum is σ = 19739142. Its totient is φ = 19739140.

The previous prime is 19739123. The next prime is 19739189. The reversal of 19739141 is 14193791.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10588516 + 9150625 = 3254^2 + 3025^2 .

It is a cyclic number.

It is not a de Polignac number, because 19739141 - 2⁶ = 19739077 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19739341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9869570 + 9869571.

It is an arithmetic number, because the mean of its divisors is an integer number (9869571).

Almost surely, 2^19739141 is an apocalyptic number.

It is an amenable number.

19739141 is a deficient number, since it is larger than the sum of its proper divisors (1).

19739141 is an equidigital number, since it uses as much as digits as its factorization.

19739141 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6804, while the sum is 35.

The square root of 19739141 is about 4442.8753077258. The cubic root of 19739141 is about 270.2564595711.

The spelling of 19739141 in words is "nineteen million, seven hundred thirty-nine thousand, one hundred forty-one".