245146609 has 4 divisors (see below), whose sum is σ = 245372400. Its totient is φ = 244920820.

The previous prime is 245146597. The next prime is 245146619. The reversal of 245146609 is 906641542.

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 a de Polignac number, because none of the positive numbers 2^k-245146609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (245146619) 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, 111259 + ... + 113440.

It is an arithmetic number, because the mean of its divisors is an integer number (61343100).

Almost surely, 2^245146609 is an apocalyptic number.

It is an amenable number.

245146609 is a deficient number, since it is larger than the sum of its proper divisors (225791).

245146609 is a wasteful number, since it uses less digits than its factorization.

245146609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225790.

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 245146609 is about 15657.1583948046. The cubic root of 245146609 is about 625.8572633018.

The spelling of 245146609 in words is "two hundred forty-five million, one hundred forty-six thousand, six hundred nine".