838861784842 has 8 divisors (see below), whose sum is σ = 1258297773696. Its totient is φ = 419429193612.

The previous prime is 838861784809. The next prime is 838861784903. The reversal of 838861784842 is 248487168838.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99888 + ... + 1299115.

It is an arithmetic number, because the mean of its divisors is an integer number (157287221712).

Almost surely, 2^838861784842 is an apocalyptic number.

838861784842 is a deficient number, since it is larger than the sum of its proper divisors (419435988854).

838861784842 is a wasteful number, since it uses less digits than its factorization.

838861784842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1698812.

The product of its digits is 132120576, while the sum is 67.

The spelling of 838861784842 in words is "eight hundred thirty-eight billion, eight hundred sixty-one million, seven hundred eighty-four thousand, eight hundred forty-two".