1089165471 has 4 divisors (see below), whose sum is σ = 1452220632. Its totient is φ = 726110312.

The previous prime is 1089165457. The next prime is 1089165479. The reversal of 1089165471 is 1745619801.

1089165471 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1089165471 - 2²³ = 1080776863 is a prime.

It is a super-3 number, since 3×1089165471³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1089165479) 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, 181527576 + ... + 181527581.

It is an arithmetic number, because the mean of its divisors is an integer number (363055158).

Almost surely, 2^1089165471 is an apocalyptic number.

1089165471 is a deficient number, since it is larger than the sum of its proper divisors (363055161).

1089165471 is an equidigital number, since it uses as much as digits as its factorization.

1089165471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363055160.

The product of its (nonzero) digits is 60480, while the sum is 42.

The square root of 1089165471 is about 33002.5070411325. The cubic root of 1089165471 is about 1028.8797544884.

The spelling of 1089165471 in words is "one billion, eighty-nine million, one hundred sixty-five thousand, four hundred seventy-one".