7648803981 has 96 divisors (see below), whose sum is σ = 13824032768. Its totient is φ = 3968092800.

The previous prime is 7648803979. The next prime is 7648803991. The reversal of 7648803981 is 1893088467.

7648803981 is a `hidden beast` number, since 76 + 488 + 0 + 3 + 98 + 1 = 666.

It is not a de Polignac number, because 7648803981 - 2¹ = 7648803979 is a prime.

It is a super-2 number, since 2×7648803981² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7648803961) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 15705720 + ... + 15706206.

Almost surely, 2^7648803981 is an apocalyptic number.

It is an amenable number.

7648803981 is a deficient number, since it is larger than the sum of its proper divisors (6175228787).

7648803981 is a wasteful number, since it uses less digits than its factorization.

7648803981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 791 (or 788 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 54.

The square root of 7648803981 is about 87457.4409698797. The cubic root of 7648803981 is about 1970.2946453909.

The spelling of 7648803981 in words is "seven billion, six hundred forty-eight million, eight hundred three thousand, nine hundred eighty-one".