1191381007 has 2 divisors, whose sum is σ = 1191381008. Its totient is φ = 1191381006.

The previous prime is 1191380989. The next prime is 1191381043. The reversal of 1191381007 is 7001831911.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1191381007 - 2¹¹ = 1191378959 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1191381007.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1191381047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 595690503 + 595690504.

It is an arithmetic number, because the mean of its divisors is an integer number (595690504).

Almost surely, 2^1191381007 is an apocalyptic number.

1191381007 is a deficient number, since it is larger than the sum of its proper divisors (1).

1191381007 is an equidigital number, since it uses as much as digits as its factorization.

1191381007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 31.

The square root of 1191381007 is about 34516.3875137593. The cubic root of 1191381007 is about 1060.1082739168.

The spelling of 1191381007 in words is "one billion, one hundred ninety-one million, three hundred eighty-one thousand, seven".