1089180517 has 4 divisors (see below), whose sum is σ = 1090099296. Its totient is φ = 1088261740.

The previous prime is 1089180481. The next prime is 1089180527. The reversal of 1089180517 is 7150819801.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7150819801 = 1109 ⋅6447989.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1089180517 is a prime.

It is a super-2 number, since 2×1089180517² = 2372628397224774578, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1089180517.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1089180527) 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, 457609 + ... + 459982.

It is an arithmetic number, because the mean of its divisors is an integer number (272524824).

Almost surely, 2^1089180517 is an apocalyptic number.

It is an amenable number.

1089180517 is a deficient number, since it is larger than the sum of its proper divisors (918779).

1089180517 is an equidigital number, since it uses as much as digits as its factorization.

1089180517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 918778.

The product of its (nonzero) digits is 20160, while the sum is 40.

The square root of 1089180517 is about 33002.7349927245. The cubic root of 1089180517 is about 1028.8844921994.

The spelling of 1089180517 in words is "one billion, eighty-nine million, one hundred eighty thousand, five hundred seventeen".