7397744640 has 448 divisors, whose sum is σ = 27875740032. Its totient is φ = 1651507200.

The previous prime is 7397744621. The next prime is 7397744659. The reversal of 7397744640 is 464477937.

It is an interprime number because it is at equal distance from previous prime (7397744621) and next prime (7397744659).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17571630 + ... + 17572050.

It is an arithmetic number, because the mean of its divisors is an integer number (62222634).

Almost surely, 2^7397744640 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7397744640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13937870016).

7397744640 is an abundant number, since it is smaller than the sum of its proper divisors (20477995392).

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

7397744640 is a wasteful number, since it uses less digits than its factorization.

7397744640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479 (or 455 counting only the distinct ones).

The product of its (nonzero) digits is 3556224, while the sum is 51.

The square root of 7397744640 is about 86010.1426577122. The cubic root of 7397744640 is about 1948.4971668749.

The spelling of 7397744640 in words is "seven billion, three hundred ninety-seven million, seven hundred forty-four thousand, six hundred forty".