438850537857 has 12 divisors (see below), whose sum is σ = 671183175780. Its totient is φ = 275357200128.

The previous prime is 438850537849. The next prime is 438850537871. The reversal of 438850537857 is 758735058834.

438850537857 is a `hidden beast` number, since 4 + 3 + 8 + 8 + 505 + 3 + 78 + 57 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 240775694721 + 198074843136 = 490689^2 + 445056^2 .

It is not a de Polignac number, because 438850537857 - 2³ = 438850537849 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 438850537794 and 438850537803.

It is not an unprimeable number, because it can be changed into a prime (438850537817) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1434151932 + ... + 1434152237.

It is an arithmetic number, because the mean of its divisors is an integer number (55931931315).

Almost surely, 2^438850537857 is an apocalyptic number.

It is an amenable number.

438850537857 is a deficient number, since it is larger than the sum of its proper divisors (232332637923).

438850537857 is a wasteful number, since it uses less digits than its factorization.

438850537857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2868304192 (or 2868304189 counting only the distinct ones).

The product of its (nonzero) digits is 112896000, while the sum is 63.

The spelling of 438850537857 in words is "four hundred thirty-eight billion, eight hundred fifty million, five hundred thirty-seven thousand, eight hundred fifty-seven".