38442256605 has 24 divisors (see below), whose sum is σ = 66892538232. Its totient is φ = 20422754304.

The previous prime is 38442256579. The next prime is 38442256627. The reversal of 38442256605 is 50665224483.

38442256605 is a `hidden beast` number, since 3 + 84 + 4 + 2 + 2 + 566 + 0 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 22898650329 + 15543606276 = 151323^2 + 124674^2 .

It is not a de Polignac number, because 38442256605 - 2⁷ = 38442256477 is a prime.

It is a super-2 number, since 2×38442256605² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1650444 + ... + 1673573.

It is an arithmetic number, because the mean of its divisors is an integer number (2787189093).

Almost surely, 2^38442256605 is an apocalyptic number.

It is an amenable number.

38442256605 is a deficient number, since it is larger than the sum of its proper divisors (28450281627).

38442256605 is a wasteful number, since it uses less digits than its factorization.

38442256605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3324285 (or 3324282 counting only the distinct ones).

The product of its (nonzero) digits is 1382400, while the sum is 45.

The spelling of 38442256605 in words is "thirty-eight billion, four hundred forty-two million, two hundred fifty-six thousand, six hundred five".