2985642738 has 48 divisors (see below), whose sum is σ = 6987356376. Its totient is φ = 915909120.

The previous prime is 2985642733. The next prime is 2985642757. The reversal of 2985642738 is 8372465892.

2985642738 is a `hidden beast` number, since 2 + 9 + 8 + 564 + 2 + 73 + 8 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 2549543049 + 436099689 = 50493^2 + 20883^2 .

It is not an unprimeable number, because it can be changed into a prime (2985642733) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 59928 + ... + 97788.

Almost surely, 2^2985642738 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2985642738, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3493678188).

2985642738 is an abundant number, since it is smaller than the sum of its proper divisors (4001713638).

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

2985642738 is a wasteful number, since it uses less digits than its factorization.

2985642738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38219 (or 38216 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 54.

The square root of 2985642738 is about 54641.0352939986. The cubic root of 2985642738 is about 1439.9451396924.

The spelling of 2985642738 in words is "two billion, nine hundred eighty-five million, six hundred forty-two thousand, seven hundred thirty-eight".