1085049489 has 4 divisors (see below), whose sum is σ = 1446732656. Its totient is φ = 723366324.

The previous prime is 1085049479. The next prime is 1085049499. The reversal of 1085049489 is 9849405801.

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.

It is an interprime number because it is at equal distance from previous prime (1085049479) and next prime (1085049499).

It is not a de Polignac number, because 1085049489 - 2⁸ = 1085049233 is a prime.

It is a super-4 number, since 4×1085049489⁴ (a number of 37 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1085049479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 180841579 + ... + 180841584.

It is an arithmetic number, because the mean of its divisors is an integer number (361683164).

Almost surely, 2^1085049489 is an apocalyptic number.

It is an amenable number.

1085049489 is a deficient number, since it is larger than the sum of its proper divisors (361683167).

1085049489 is an equidigital number, since it uses as much as digits as its factorization.

1085049489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361683166.

The product of its (nonzero) digits is 414720, while the sum is 48.

The square root of 1085049489 is about 32940.0893896783. The cubic root of 1085049489 is about 1027.5820648279.

The spelling of 1085049489 in words is "one billion, eighty-five million, forty-nine thousand, four hundred eighty-nine".