245185489 has 4 divisors (see below), whose sum is σ = 245344320. Its totient is φ = 245026660.

The previous prime is 245185469. The next prime is 245185529. The reversal of 245185489 is 984581542.

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 a cyclic number.

It is not a de Polignac number, because 245185489 - 2¹¹ = 245183441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (245185469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77077 + ... + 80194.

It is an arithmetic number, because the mean of its divisors is an integer number (61336080).

Almost surely, 2^245185489 is an apocalyptic number.

It is an amenable number.

245185489 is a deficient number, since it is larger than the sum of its proper divisors (158831).

245185489 is a wasteful number, since it uses less digits than its factorization.

245185489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158830.

The product of its digits is 460800, while the sum is 46.

The square root of 245185489 is about 15658.3999501865. The cubic root of 245185489 is about 625.8903483255.

The spelling of 245185489 in words is "two hundred forty-five million, one hundred eighty-five thousand, four hundred eighty-nine".