245329919 has 4 divisors (see below), whose sum is σ = 258242040. Its totient is φ = 232417800.

The previous prime is 245329913. The next prime is 245329949. The reversal of 245329919 is 919923542.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 245329919 - 2²⁴ = 228552703 is a prime.

It is a super-2 number, since 2×245329919² = 120373538313093122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 245329919.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245329913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6456032 + ... + 6456069.

It is an arithmetic number, because the mean of its divisors is an integer number (64560510).

Almost surely, 2^245329919 is an apocalyptic number.

245329919 is a deficient number, since it is larger than the sum of its proper divisors (12912121).

245329919 is a wasteful number, since it uses less digits than its factorization.

245329919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12912120.

The product of its digits is 174960, while the sum is 44.

The square root of 245329919 is about 15663.0111728237. The cubic root of 245329919 is about 626.0132207397.

The spelling of 245329919 in words is "two hundred forty-five million, three hundred twenty-nine thousand, nine hundred nineteen".