249138141822 has 16 divisors (see below), whose sum is σ = 553640315280. Its totient is φ = 83046047256.

The previous prime is 249138141809. The next prime is 249138141851. The reversal of 249138141822 is 228141831942.

249138141822 is a `hidden beast` number, since 2 + 4 + 91 + 381 + 4 + 182 + 2 = 666.

249138141822 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2306834593 + ... + 2306834700.

It is an arithmetic number, because the mean of its divisors is an integer number (34602519705).

Almost surely, 2^249138141822 is an apocalyptic number.

249138141822 is an abundant number, since it is smaller than the sum of its proper divisors (304502173458).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

249138141822 is a wasteful number, since it uses less digits than its factorization.

249138141822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4613669304 (or 4613669298 counting only the distinct ones).

The product of its digits is 221184, while the sum is 45.

The spelling of 249138141822 in words is "two hundred forty-nine billion, one hundred thirty-eight million, one hundred forty-one thousand, eight hundred twenty-two".