838227801866 has 48 divisors (see below), whose sum is σ = 1577439196704. Its totient is φ = 331120744416.

The previous prime is 838227801847. The next prime is 838227801877. The reversal of 838227801866 is 668108722838.

It is a super-2 number, since 2×838227801866² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 388481 + ... + 1351803.

It is an arithmetic number, because the mean of its divisors is an integer number (32863316598).

Almost surely, 2^838227801866 is an apocalyptic number.

838227801866 is a deficient number, since it is larger than the sum of its proper divisors (739211394838).

838227801866 is a wasteful number, since it uses less digits than its factorization.

838227801866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 964035 (or 964028 counting only the distinct ones).

The product of its (nonzero) digits is 12386304, while the sum is 59.

The spelling of 838227801866 in words is "eight hundred thirty-eight billion, two hundred twenty-seven million, eight hundred one thousand, eight hundred sixty-six".