1191944283979 has 2 divisors, whose sum is σ = 1191944283980. Its totient is φ = 1191944283978.

The previous prime is 1191944283911. The next prime is 1191944284019. The reversal of 1191944283979 is 9793824491911.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1191944283979 is a prime.

It is a super-2 number, since 2×1191944283979² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1191944283479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 595972141989 + 595972141990.

It is an arithmetic number, because the mean of its divisors is an integer number (595972141990).

Almost surely, 2^{1191944283979} is an apocalyptic number.

1191944283979 is a deficient number, since it is larger than the sum of its proper divisors (1).

1191944283979 is an equidigital number, since it uses as much as digits as its factorization.

1191944283979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 35271936, while the sum is 67.

The spelling of 1191944283979 in words is "one trillion, one hundred ninety-one billion, nine hundred forty-four million, two hundred eighty-three thousand, nine hundred seventy-nine".