190981339 has 2 divisors, whose sum is σ = 190981340. Its totient is φ = 190981338.

The previous prime is 190981333. The next prime is 190981379. The reversal of 190981339 is 933189091.

190981339 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (933189091) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 190981339 - 2¹⁷ = 190850267 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 190981295 and 190981304.

It is not a weakly prime, because it can be changed into another prime (190981333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95490669 + 95490670.

It is an arithmetic number, because the mean of its divisors is an integer number (95490670).

Almost surely, 2^190981339 is an apocalyptic number.

190981339 is a deficient number, since it is larger than the sum of its proper divisors (1).

190981339 is an equidigital number, since it uses as much as digits as its factorization.

190981339 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 52488, while the sum is 43.

The square root of 190981339 is about 13819.5998133086. The cubic root of 190981339 is about 575.8777661068.

The spelling of 190981339 in words is "one hundred ninety million, nine hundred eighty-one thousand, three hundred thirty-nine".