1391119111 has 2 divisors, whose sum is σ = 1391119112. Its totient is φ = 1391119110.

The previous prime is 1391119087. The next prime is 1391119159. The reversal of 1391119111 is 1119111931.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1391119111 - 2⁷ = 1391118983 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1391119111.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1391119711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 695559555 + 695559556.

It is an arithmetic number, because the mean of its divisors is an integer number (695559556).

Almost surely, 2^1391119111 is an apocalyptic number.

1391119111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1391119111 is an equidigital number, since it uses as much as digits as its factorization.

1391119111 is an evil number, because the sum of its binary digits is even.

The product of its digits is 243, while the sum is 28.

The square root of 1391119111 is about 37297.7091923887. The cubic root of 1391119111 is about 1116.3184577721.

The spelling of 1391119111 in words is "one billion, three hundred ninety-one million, one hundred nineteen thousand, one hundred eleven".