1086995791 has 4 divisors (see below), whose sum is σ = 1242280912. Its totient is φ = 931710672.

The previous prime is 1086995779. The next prime is 1086995797. The reversal of 1086995791 is 1975996801.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1975996801 = 1693 ⋅1167157.

It is a cyclic number.

It is not a de Polignac number, because 1086995791 - 2⁹ = 1086995279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1086995797) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77642550 + ... + 77642563.

It is an arithmetic number, because the mean of its divisors is an integer number (310570228).

Almost surely, 2^1086995791 is an apocalyptic number.

1086995791 is a deficient number, since it is larger than the sum of its proper divisors (155285121).

1086995791 is an equidigital number, since it uses as much as digits as its factorization.

1086995791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155285120.

The product of its (nonzero) digits is 1224720, while the sum is 55.

The square root of 1086995791 is about 32969.6192122384. The cubic root of 1086995791 is about 1028.1961045307.

The spelling of 1086995791 in words is "one billion, eighty-six million, nine hundred ninety-five thousand, seven hundred ninety-one".