38430441007638 has 32 divisors (see below), whose sum is σ = 78946278177120. Its totient is φ = 12462651809280.

The previous prime is 38430441007537. The next prime is 38430441007697. The reversal of 38430441007638 is 83670014403483.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6677923 + ... + 11020686.

It is an arithmetic number, because the mean of its divisors is an integer number (2467071193035).

Almost surely, 2^{38430441007638} is an apocalyptic number.

38430441007638 is an abundant number, since it is smaller than the sum of its proper divisors (40515837169482).

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

38430441007638 is a wasteful number, since it uses less digits than its factorization.

38430441007638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17708432.

The product of its (nonzero) digits is 4644864, while the sum is 51.

The spelling of 38430441007638 in words is "thirty-eight trillion, four hundred thirty billion, four hundred forty-one million, seven thousand, six hundred thirty-eight".