438651854166 has 16 divisors (see below), whose sum is σ = 901014619824. Its totient is φ = 142265466144.

The previous prime is 438651854143. The next prime is 438651854219. The reversal of 438651854166 is 661458156834.

It is a happy number.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 987954405 + ... + 987954848.

It is an arithmetic number, because the mean of its divisors is an integer number (56313413739).

Almost surely, 2^438651854166 is an apocalyptic number.

438651854166 is an abundant number, since it is smaller than the sum of its proper divisors (462362765658).

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

438651854166 is a wasteful number, since it uses less digits than its factorization.

438651854166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1975909295.

The product of its digits is 16588800, while the sum is 57.

The spelling of 438651854166 in words is "four hundred thirty-eight billion, six hundred fifty-one million, eight hundred fifty-four thousand, one hundred sixty-six".