37421809638 has 16 divisors (see below), whose sum is σ = 74847433536. Its totient is φ = 12473300840.

The previous prime is 37421809627. The next prime is 37421809643. The reversal of 37421809638 is 83690812473.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22356 + ... + 274487.

It is an arithmetic number, because the mean of its divisors is an integer number (4677964596).

Almost surely, 2^37421809638 is an apocalyptic number.

37421809638 is an abundant number, since it is smaller than the sum of its proper divisors (37425623898).

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

37421809638 is a wasteful number, since it uses less digits than its factorization.

37421809638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317859.

The product of its (nonzero) digits is 1741824, while the sum is 51.

The spelling of 37421809638 in words is "thirty-seven billion, four hundred twenty-one million, eight hundred nine thousand, six hundred thirty-eight".