1089592191 has 6 divisors (see below), whose sum is σ = 1573855400. Its totient is φ = 726394788.

The previous prime is 1089592139. The next prime is 1089592213. The reversal of 1089592191 is 1912959801.

It is not a de Polignac number, because 1089592191 - 2¹⁴ = 1089575807 is a prime.

It is a super-2 number, since 2×1089592191² = 2374422285376360962, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1089592291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 60532891 + ... + 60532908.

Almost surely, 2^1089592191 is an apocalyptic number.

1089592191 is a deficient number, since it is larger than the sum of its proper divisors (484263209).

1089592191 is a wasteful number, since it uses less digits than its factorization.

1089592191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121065805 (or 121065802 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 45.

The square root of 1089592191 is about 33008.9713714317. The cubic root of 1089592191 is about 1029.0141039073.

The spelling of 1089592191 in words is "one billion, eighty-nine million, five hundred ninety-two thousand, one hundred ninety-one".