245134789 has 4 divisors (see below), whose sum is σ = 258036640. Its totient is φ = 232232940.

The previous prime is 245134741. The next prime is 245134801. The reversal of 245134789 is 987431542.

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 245134789 - 2⁹ = 245134277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245134739) 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, 6450897 + ... + 6450934.

It is an arithmetic number, because the mean of its divisors is an integer number (64509160).

Almost surely, 2^245134789 is an apocalyptic number.

It is an amenable number.

245134789 is a deficient number, since it is larger than the sum of its proper divisors (12901851).

245134789 is a wasteful number, since it uses less digits than its factorization.

245134789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12901850.

The product of its digits is 241920, while the sum is 43.

The square root of 245134789 is about 15656.7809271255. The cubic root of 245134789 is about 625.8472043528.

The spelling of 245134789 in words is "two hundred forty-five million, one hundred thirty-four thousand, seven hundred eighty-nine".