245391836 has 24 divisors (see below), whose sum is σ = 437817744. Its totient is φ = 120320640.

The previous prime is 245391829. The next prime is 245391857. The reversal of 245391836 is 638193542.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 245391793 and 245391802.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50531 + ... + 55173.

It is an arithmetic number, because the mean of its divisors is an integer number (18242406).

Almost surely, 2^245391836 is an apocalyptic number.

It is an amenable number.

245391836 is a deficient number, since it is larger than the sum of its proper divisors (192425908).

245391836 is a wasteful number, since it uses less digits than its factorization.

245391836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4901 (or 4899 counting only the distinct ones).

The product of its digits is 155520, while the sum is 41.

The square root of 245391836 is about 15664.9875837806. The cubic root of 245391836 is about 626.0658812554.

The spelling of 245391836 in words is "two hundred forty-five million, three hundred ninety-one thousand, eight hundred thirty-six".