7873518340 has 12 divisors (see below), whose sum is σ = 16534388556. Its totient is φ = 3149407328.

The previous prime is 7873518307. The next prime is 7873518347. The reversal of 7873518340 is 438153787.

It can be written as a sum of positive squares in 2 ways, for example, as 4901960196 + 2971558144 = 70014^2 + 54512^2 .

It is not an unprimeable number, because it can be changed into a prime (7873518347) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 196837939 + ... + 196837978.

It is an arithmetic number, because the mean of its divisors is an integer number (1377865713).

Almost surely, 2^7873518340 is an apocalyptic number.

It is an amenable number.

7873518340 is an abundant number, since it is smaller than the sum of its proper divisors (8660870216).

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

7873518340 is a wasteful number, since it uses less digits than its factorization.

7873518340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393675926 (or 393675924 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 46.

The square root of 7873518340 is about 88732.8481454303. The cubic root of 7873518340 is about 1989.4038213093.

It can be divided in two parts, 787351 and 8340, that added together give a triangular number (795691 = T₁₂₆₁).

The spelling of 7873518340 in words is "seven billion, eight hundred seventy-three million, five hundred eighteen thousand, three hundred forty".