7442540648 has 8 divisors (see below), whose sum is σ = 13954763730. Its totient is φ = 3721270320.

The previous prime is 7442540593. The next prime is 7442540669. The reversal of 7442540648 is 8460452447.

It can be written as a sum of positive squares in only one way, i.e., 7279161124 + 163379524 = 85318^2 + 12782^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-3 number, since 3×7442540648³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 7442540599 and 7442540608.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 465158783 + ... + 465158798.

Almost surely, 2^7442540648 is an apocalyptic number.

It is an amenable number.

7442540648 is a deficient number, since it is larger than the sum of its proper divisors (6512223082).

7442540648 is a wasteful number, since it uses less digits than its factorization.

7442540648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 930317587 (or 930317583 counting only the distinct ones).

The product of its (nonzero) digits is 860160, while the sum is 44.

The square root of 7442540648 is about 86270.1608205294. The cubic root of 7442540648 is about 1952.4222056865.

The spelling of 7442540648 in words is "seven billion, four hundred forty-two million, five hundred forty thousand, six hundred forty-eight".