1086138191 has 8 divisors (see below), whose sum is σ = 1102039200. Its totient is φ = 1070254080.

The previous prime is 1086138149. The next prime is 1086138199. The reversal of 1086138191 is 1918316801.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1086138191 - 2⁶ = 1086138127 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 (1086138199) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 188075 + ... + 193763.

It is an arithmetic number, because the mean of its divisors is an integer number (137754900).

Almost surely, 2^1086138191 is an apocalyptic number.

1086138191 is a deficient number, since it is larger than the sum of its proper divisors (15901009).

1086138191 is an equidigital number, since it uses as much as digits as its factorization.

1086138191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8449.

The product of its (nonzero) digits is 10368, while the sum is 38.

The square root of 1086138191 is about 32956.6107329015. The cubic root of 1086138191 is about 1027.9256303222.

The spelling of 1086138191 in words is "one billion, eighty-six million, one hundred thirty-eight thousand, one hundred ninety-one".