838477971830 has 16 divisors (see below), whose sum is σ = 1588695104880. Its totient is φ = 317739020832.

The previous prime is 838477971763. The next prime is 838477971833. The reversal of 838477971830 is 38179774838.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (838477971833) by changing a digit.

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, 2206520789 + ... + 2206521168.

It is an arithmetic number, because the mean of its divisors is an integer number (99293444055).

Almost surely, 2^838477971830 is an apocalyptic number.

838477971830 is a deficient number, since it is larger than the sum of its proper divisors (750217133050).

838477971830 is a wasteful number, since it uses less digits than its factorization.

838477971830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4413041983.

The product of its (nonzero) digits is 56899584, while the sum is 65.

The spelling of 838477971830 in words is "eight hundred thirty-eight billion, four hundred seventy-seven million, nine hundred seventy-one thousand, eight hundred thirty".