7289649378 has 128 divisors (see below), whose sum is σ = 18075156480. Its totient is φ = 2159136000.

The previous prime is 7289649377. The next prime is 7289649391. The reversal of 7289649378 is 8739469827.

7289649378 is a `hidden beast` number, since 72 + 8 + 9 + 6 + 493 + 78 = 666.

It is not an unprimeable number, because it can be changed into a prime (7289649377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5355418 + ... + 5356778.

It is an arithmetic number, because the mean of its divisors is an integer number (141212160).

Almost surely, 2^7289649378 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7289649378, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9037578240).

7289649378 is an abundant number, since it is smaller than the sum of its proper divisors (10785507102).

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

7289649378 is a wasteful number, since it uses less digits than its factorization.

7289649378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1581 (or 1575 counting only the distinct ones).

The product of its digits is 36578304, while the sum is 63.

The square root of 7289649378 is about 85379.4435329723. The cubic root of 7289649378 is about 1938.9601344315.

The spelling of 7289649378 in words is "seven billion, two hundred eighty-nine million, six hundred forty-nine thousand, three hundred seventy-eight".