6409602738 has 128 divisors (see below), whose sum is σ = 17978388480. Its totient is φ = 1664744400.

The previous prime is 6409602737. The next prime is 6409602743. The reversal of 6409602738 is 8372069046.

6409602738 is a `hidden beast` number, since 6 + 4 + 0 + 9 + 602 + 7 + 38 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 6409602693 and 6409602702.

It is not an unprimeable number, because it can be changed into a prime (6409602737) 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 63 ways as a sum of consecutive naturals, for example, 327283 + ... + 346313.

It is an arithmetic number, because the mean of its divisors is an integer number (140456160).

Almost surely, 2^6409602738 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6409602738, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8989194240).

6409602738 is an abundant number, since it is smaller than the sum of its proper divisors (11568785742).

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

6409602738 is a wasteful number, since it uses less digits than its factorization.

6409602738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19072 (or 19054 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 45.

The square root of 6409602738 is about 80059.9946165374. The cubic root of 6409602738 is about 1857.5636519389.

The spelling of 6409602738 in words is "six billion, four hundred nine million, six hundred two thousand, seven hundred thirty-eight".