189196615379 has 2 divisors, whose sum is σ = 189196615380. Its totient is φ = 189196615378.

The previous prime is 189196615219. The next prime is 189196615451. The reversal of 189196615379 is 973516691981.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-189196615379 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (189196615079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94598307689 + 94598307690.

It is an arithmetic number, because the mean of its divisors is an integer number (94598307690).

Almost surely, 2^189196615379 is an apocalyptic number.

189196615379 is a deficient number, since it is larger than the sum of its proper divisors (1).

189196615379 is an equidigital number, since it uses as much as digits as its factorization.

189196615379 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22044960, while the sum is 65.

The spelling of 189196615379 in words is "one hundred eighty-nine billion, one hundred ninety-six million, six hundred fifteen thousand, three hundred seventy-nine".