7874968781 has 16 divisors (see below), whose sum is σ = 8529960960. Its totient is φ = 7248750960.

The previous prime is 7874968747. The next prime is 7874968793. The reversal of 7874968781 is 1878694787.

It is a cyclic number.

It is not a de Polignac number, because 7874968781 - 2¹⁰ = 7874967757 is a prime.

It is a super-2 number, since 2×7874968781² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7874967781) 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, 96776 + ... + 158478.

It is an arithmetic number, because the mean of its divisors is an integer number (533122560).

Almost surely, 2^7874968781 is an apocalyptic number.

It is an amenable number.

7874968781 is a deficient number, since it is larger than the sum of its proper divisors (654992179).

7874968781 is a wasteful number, since it uses less digits than its factorization.

7874968781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61936.

The product of its digits is 37933056, while the sum is 65.

The square root of 7874968781 is about 88741.0208471821. The cubic root of 7874968781 is about 1989.5259749037.

The spelling of 7874968781 in words is "seven billion, eight hundred seventy-four million, nine hundred sixty-eight thousand, seven hundred eighty-one".