1939196117 has 2 divisors, whose sum is σ = 1939196118. Its totient is φ = 1939196116.

The previous prime is 1939196101. The next prime is 1939196179. The reversal of 1939196117 is 7116919391.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1318488721 + 620707396 = 36311^2 + 24914^2 .

It is a cyclic number.

It is not a de Polignac number, because 1939196117 - 2⁴ = 1939196101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1939196317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 969598058 + 969598059.

It is an arithmetic number, because the mean of its divisors is an integer number (969598059).

Almost surely, 2^1939196117 is an apocalyptic number.

It is an amenable number.

1939196117 is a deficient number, since it is larger than the sum of its proper divisors (1).

1939196117 is an equidigital number, since it uses as much as digits as its factorization.

1939196117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 91854, while the sum is 47.

The square root of 1939196117 is about 44036.3045338730. The cubic root of 1939196117 is about 1247.0214130132.

The spelling of 1939196117 in words is "one billion, nine hundred thirty-nine million, one hundred ninety-six thousand, one hundred seventeen".