1194117139 has 2 divisors, whose sum is σ = 1194117140. Its totient is φ = 1194117138.

The previous prime is 1194117131. The next prime is 1194117157. The reversal of 1194117139 is 9317114911.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1194117139 - 2³ = 1194117131 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1194117098 and 1194117107.

It is not a weakly prime, because it can be changed into another prime (1194117131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 597058569 + 597058570.

It is an arithmetic number, because the mean of its divisors is an integer number (597058570).

Almost surely, 2^1194117139 is an apocalyptic number.

1194117139 is a deficient number, since it is larger than the sum of its proper divisors (1).

1194117139 is an equidigital number, since it uses as much as digits as its factorization.

1194117139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6804, while the sum is 37.

The square root of 1194117139 is about 34556.0000434078. Note that the first 4 decimals coincide. The cubic root of 1194117139 is about 1060.9192035509.

The spelling of 1194117139 in words is "one billion, one hundred ninety-four million, one hundred seventeen thousand, one hundred thirty-nine".