38405021185 has 8 divisors (see below), whose sum is σ = 46088891496. Its totient is φ = 30722106240.

The previous prime is 38405021159. The next prime is 38405021191. The reversal of 38405021185 is 58112050483.

It can be written as a sum of positive squares in 4 ways, for example, as 10073735424 + 28331285761 = 100368^2 + 168319^2 .

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

It is not a de Polignac number, because 38405021185 - 2⁹ = 38405020673 is a prime.

It is a Duffinian 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, 147204 + ... + 313813.

It is an arithmetic number, because the mean of its divisors is an integer number (5761111437).

Almost surely, 2^38405021185 is an apocalyptic number.

It is an amenable number.

38405021185 is a deficient number, since it is larger than the sum of its proper divisors (7683870311).

38405021185 is a wasteful number, since it uses less digits than its factorization.

38405021185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 477683.

The product of its (nonzero) digits is 38400, while the sum is 37.

The spelling of 38405021185 in words is "thirty-eight billion, four hundred five million, twenty-one thousand, one hundred eighty-five".