1605048738 has 8 divisors (see below), whose sum is σ = 3210097488. Its totient is φ = 535016244.

The previous prime is 1605048713. The next prime is 1605048743. The reversal of 1605048738 is 8378405061.

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

1605048738 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 1605048738.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133754056 + ... + 133754067.

It is an arithmetic number, because the mean of its divisors is an integer number (401262186).

Almost surely, 2^1605048738 is an apocalyptic number.

1605048738 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1605048738 is a wasteful number, since it uses less digits than its factorization.

1605048738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267508128.

The product of its (nonzero) digits is 161280, while the sum is 42.

The square root of 1605048738 is about 40063.0595187137. The cubic root of 1605048738 is about 1170.8360202041.

The spelling of 1605048738 in words is "one billion, six hundred five million, forty-eight thousand, seven hundred thirty-eight".