438351488685 has 24 divisors (see below), whose sum is σ = 828882815904. Its totient is φ = 212534054880.

The previous prime is 438351488683. The next prime is 438351488699. The reversal of 438351488685 is 586884153834.

438351488685 is a `hidden beast` number, since 4 + 38 + 3 + 514 + 8 + 8 + 6 + 85 = 666.

It is not a de Polignac number, because 438351488685 - 2¹ = 438351488683 is a prime.

It is a hoax number, since the sum of its digits (63) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (438351488683) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 442778787 + ... + 442779776.

It is an arithmetic number, because the mean of its divisors is an integer number (34536783996).

Almost surely, 2^438351488685 is an apocalyptic number.

438351488685 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

438351488685 is a deficient number, since it is larger than the sum of its proper divisors (390531327219).

438351488685 is a wasteful number, since it uses less digits than its factorization.

438351488685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 885558585 (or 885558582 counting only the distinct ones).

The product of its digits is 88473600, while the sum is 63.

The spelling of 438351488685 in words is "four hundred thirty-eight billion, three hundred fifty-one million, four hundred eighty-eight thousand, six hundred eighty-five".