1189949179 has 2 divisors, whose sum is σ = 1189949180. Its totient is φ = 1189949178.

The previous prime is 1189949177. The next prime is 1189949203. The reversal of 1189949179 is 9719499811.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1189949179 - 2¹ = 1189949177 is a prime.

Together with 1189949177, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1189949177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 594974589 + 594974590.

It is an arithmetic number, because the mean of its divisors is an integer number (594974590).

Almost surely, 2^1189949179 is an apocalyptic number.

1189949179 is a deficient number, since it is larger than the sum of its proper divisors (1).

1189949179 is an equidigital number, since it uses as much as digits as its factorization.

1189949179 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1469664, while the sum is 58.

The square root of 1189949179 is about 34495.6399998609. The cubic root of 1189949179 is about 1059.6834164934.

The spelling of 1189949179 in words is "one billion, one hundred eighty-nine million, nine hundred forty-nine thousand, one hundred seventy-nine".