1086911993 has 2 divisors, whose sum is σ = 1086911994. Its totient is φ = 1086911992.

The previous prime is 1086911981. The next prime is 1086912019. The reversal of 1086911993 is 3991196801.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 909143104 + 177768889 = 30152^2 + 13333^2 .

It is a cyclic number.

It is not a de Polignac number, because 1086911993 - 2⁴ = 1086911977 is a prime.

It is not a weakly prime, because it can be changed into another prime (1086911923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 543455996 + 543455997.

It is an arithmetic number, because the mean of its divisors is an integer number (543455997).

Almost surely, 2^1086911993 is an apocalyptic number.

It is an amenable number.

1086911993 is a deficient number, since it is larger than the sum of its proper divisors (1).

1086911993 is an equidigital number, since it uses as much as digits as its factorization.

1086911993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 104976, while the sum is 47.

The square root of 1086911993 is about 32968.3483511079. The cubic root of 1086911993 is about 1028.1696821679.

The spelling of 1086911993 in words is "one billion, eighty-six million, nine hundred eleven thousand, nine hundred ninety-three".