7648918440 has 64 divisors (see below), whose sum is σ = 23087592000. Its totient is φ = 2027192832.

The previous prime is 7648918411. The next prime is 7648918441. The reversal of 7648918440 is 448198467.

It is not an unprimeable number, because it can be changed into a prime (7648918441) 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 15 ways as a sum of consecutive naturals, for example, 175965 + ... + 215084.

It is an arithmetic number, because the mean of its divisors is an integer number (360743625).

Almost surely, 2^7648918440 is an apocalyptic number.

It is an amenable number.

7648918440 is an abundant number, since it is smaller than the sum of its proper divisors (15438673560).

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

7648918440 is a wasteful number, since it uses less digits than its factorization.

7648918440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391226 (or 391222 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 51.

The square root of 7648918440 is about 87458.0953371385. The cubic root of 7648918440 is about 1970.3044733688.

The spelling of 7648918440 in words is "seven billion, six hundred forty-eight million, nine hundred eighteen thousand, four hundred forty".