538445000638 has 8 divisors (see below), whose sum is σ = 810810176832. Its totient is φ = 268174941696.

The previous prime is 538445000633. The next prime is 538445000671. The reversal of 538445000638 is 836000544835.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (538445000633) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 523778670 + ... + 523779697.

It is an arithmetic number, because the mean of its divisors is an integer number (101351272104).

Almost surely, 2^538445000638 is an apocalyptic number.

538445000638 is a deficient number, since it is larger than the sum of its proper divisors (272365176194).

538445000638 is a wasteful number, since it uses less digits than its factorization.

538445000638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1047558626.

The product of its (nonzero) digits is 1382400, while the sum is 46.

The spelling of 538445000638 in words is "five hundred thirty-eight billion, four hundred forty-five million, six hundred thirty-eight", and thus it is an aban number.