1085366291 has 4 divisors (see below), whose sum is σ = 1085736792. Its totient is φ = 1084995792.

The previous prime is 1085366281. The next prime is 1085366323. The reversal of 1085366291 is 1926635801.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1926635801 = 10691 ⋅180211.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1085366291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1085366221) 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, 180821 + ... + 186726.

It is an arithmetic number, because the mean of its divisors is an integer number (271434198).

Almost surely, 2^1085366291 is an apocalyptic number.

1085366291 is a deficient number, since it is larger than the sum of its proper divisors (370501).

1085366291 is an equidigital number, since it uses as much as digits as its factorization.

1085366291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370500.

The product of its (nonzero) digits is 77760, while the sum is 41.

The square root of 1085366291 is about 32944.8977992041. The cubic root of 1085366291 is about 1027.6820628400.

The spelling of 1085366291 in words is "one billion, eighty-five million, three hundred sixty-six thousand, two hundred ninety-one".