245013739 has 4 divisors (see below), whose sum is σ = 252917440. Its totient is φ = 237110040.

The previous prime is 245013737. The next prime is 245013749. The reversal of 245013739 is 937310542.

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 245013739 - 2¹ = 245013737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (245013737) 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, 3951804 + ... + 3951865.

It is an arithmetic number, because the mean of its divisors is an integer number (63229360).

Almost surely, 2^245013739 is an apocalyptic number.

245013739 is a deficient number, since it is larger than the sum of its proper divisors (7903701).

245013739 is an equidigital number, since it uses as much as digits as its factorization.

245013739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7903700.

The product of its (nonzero) digits is 22680, while the sum is 34.

The square root of 245013739 is about 15652.9147126023. The cubic root of 245013739 is about 625.7441708639.

The spelling of 245013739 in words is "two hundred forty-five million, thirteen thousand, seven hundred thirty-nine".