4091642738 has 8 divisors (see below), whose sum is σ = 6147040860. Its totient is φ = 2042629120.

The previous prime is 4091642719. The next prime is 4091642747. The reversal of 4091642738 is 8372461904.

It can be written as a sum of positive squares in 2 ways, for example, as 4045850449 + 45792289 = 63607^2 + 6767^2 .

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

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, 1594523 + ... + 1597086.

Almost surely, 2^4091642738 is an apocalyptic number.

4091642738 is a deficient number, since it is larger than the sum of its proper divisors (2055398122).

4091642738 is a wasteful number, since it uses less digits than its factorization.

4091642738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3192252.

The product of its (nonzero) digits is 290304, while the sum is 44.

The square root of 4091642738 is about 63965.9498327040. The cubic root of 4091642738 is about 1599.4324468780.

The spelling of 4091642738 in words is "four billion, ninety-one million, six hundred forty-two thousand, seven hundred thirty-eight".