19170139741 has 2 divisors, whose sum is σ = 19170139742. Its totient is φ = 19170139740.

The previous prime is 19170139717. The next prime is 19170139873. The reversal of 19170139741 is 14793107191.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9755512900 + 9414626841 = 98770^2 + 97029^2 .

It is a cyclic number.

It is not a de Polignac number, because 19170139741 - 2¹⁹ = 19169615453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19170139141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9585069870 + 9585069871.

It is an arithmetic number, because the mean of its divisors is an integer number (9585069871).

Almost surely, 2^19170139741 is an apocalyptic number.

It is an amenable number.

19170139741 is a deficient number, since it is larger than the sum of its proper divisors (1).

19170139741 is an equidigital number, since it uses as much as digits as its factorization.

19170139741 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 47628, while the sum is 43.

The spelling of 19170139741 in words is "nineteen billion, one hundred seventy million, one hundred thirty-nine thousand, seven hundred forty-one".