3909605738 has 8 divisors (see below), whose sum is σ = 5975057988. Its totient is φ = 1917919744.

The previous prime is 3909605731. The next prime is 3909605743. The reversal of 3909605738 is 8375069093.

It can be written as a sum of positive squares in 2 ways, for example, as 3848093089 + 61512649 = 62033^2 + 7843^2 .

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

It is not an unprimeable number, because it can be changed into a prime (3909605731) by changing a digit.

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, 18441431 + ... + 18441642.

Almost surely, 2^3909605738 is an apocalyptic number.

3909605738 is a deficient number, since it is larger than the sum of its proper divisors (2065452250).

3909605738 is a wasteful number, since it uses less digits than its factorization.

3909605738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36883128.

The product of its (nonzero) digits is 1224720, while the sum is 50.

The square root of 3909605738 is about 62526.8401408547. The cubic root of 3909605738 is about 1575.3521662158.

The spelling of 3909605738 in words is "three billion, nine hundred nine million, six hundred five thousand, seven hundred thirty-eight".