245143019 has 8 divisors (see below), whose sum is σ = 274657008. Its totient is φ = 216833760.

The previous prime is 245143013. The next prime is 245143021. The reversal of 245143019 is 910341542.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 245143019 - 2²⁴ = 228365803 is a prime.

It is a super-2 number, since 2×245143019² = 120190199528868722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 245142982 and 245143000.

It is not an unprimeable number, because it can be changed into a prime (245143013) 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 7 ways as a sum of consecutive naturals, for example, 300752 + ... + 301565.

It is an arithmetic number, because the mean of its divisors is an integer number (34332126).

Almost surely, 2^245143019 is an apocalyptic number.

245143019 is a deficient number, since it is larger than the sum of its proper divisors (29513989).

245143019 is a wasteful number, since it uses less digits than its factorization.

245143019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 602365.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 245143019 is about 15657.0437503381. The cubic root of 245143019 is about 625.8542082068.

The spelling of 245143019 in words is "two hundred forty-five million, one hundred forty-three thousand, nineteen".