1086373991 has 8 divisors (see below), whose sum is σ = 1089885024. Its totient is φ = 1082869920.

The previous prime is 1086373957. The next prime is 1086373997. The reversal of 1086373991 is 1993736801.

It is a happy number.

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 1086373991 - 2¹⁰ = 1086372967 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 (1086373997) 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, 543005 + ... + 545001.

It is an arithmetic number, because the mean of its divisors is an integer number (136235628).

Almost surely, 2^1086373991 is an apocalyptic number.

1086373991 is a deficient number, since it is larger than the sum of its proper divisors (3511033).

1086373991 is an equidigital number, since it uses as much as digits as its factorization.

1086373991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3481.

The product of its (nonzero) digits is 244944, while the sum is 47.

The square root of 1086373991 is about 32960.1879697310. The cubic root of 1086373991 is about 1028.0000123015. Note that the first 4 decimals are identical.

The spelling of 1086373991 in words is "one billion, eighty-six million, three hundred seventy-three thousand, nine hundred ninety-one".