1086864291 has 16 divisors (see below), whose sum is σ = 1665693600. Its totient is φ = 699590304.

The previous prime is 1086864271. The next prime is 1086864293. The reversal of 1086864291 is 1924686801.

It is not a de Polignac number, because 1086864291 - 2²¹ = 1084767139 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1086864293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 693256 + ... + 694821.

It is an arithmetic number, because the mean of its divisors is an integer number (104105850).

Almost surely, 2^1086864291 is an apocalyptic number.

1086864291 is a deficient number, since it is larger than the sum of its proper divisors (578829309).

1086864291 is a wasteful number, since it uses less digits than its factorization.

1086864291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1388115 (or 1388109 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The square root of 1086864291 is about 32967.6248917025. The cubic root of 1086864291 is about 1028.1546406350.

The spelling of 1086864291 in words is "one billion, eighty-six million, eight hundred sixty-four thousand, two hundred ninety-one".