1549085089 has 4 divisors (see below), whose sum is σ = 1549825200. Its totient is φ = 1548344980.

The previous prime is 1549085059. The next prime is 1549085119. The reversal of 1549085089 is 9805809451.

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 (1549085059) and next prime (1549085119).

It is a cyclic number.

It is not a de Polignac number, because 1549085089 - 2⁹ = 1549084577 is a prime.

It is a super-2 number, since 2×1549085089² = 4799329225924275842, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1549085059) 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, 366907 + ... + 371104.

It is an arithmetic number, because the mean of its divisors is an integer number (387456300).

Almost surely, 2^1549085089 is an apocalyptic number.

It is an amenable number.

1549085089 is a deficient number, since it is larger than the sum of its proper divisors (740111).

1549085089 is an equidigital number, since it uses as much as digits as its factorization.

1549085089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 740110.

The product of its (nonzero) digits is 518400, while the sum is 49.

The square root of 1549085089 is about 39358.4182736044. The cubic root of 1549085089 is about 1157.0667788995.

The spelling of 1549085089 in words is "one billion, five hundred forty-nine million, eighty-five thousand, eighty-nine".