7891484540 has 24 divisors (see below), whose sum is σ = 16698627792. Its totient is φ = 3132496640.

The previous prime is 7891484521. The next prime is 7891484551. The reversal of 7891484540 is 454841987.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1503389 + ... + 1508628.

It is an arithmetic number, because the mean of its divisors is an integer number (695776158).

Almost surely, 2^7891484540 is an apocalyptic number.

It is an amenable number.

7891484540 is an abundant number, since it is smaller than the sum of its proper divisors (8807143252).

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

7891484540 is a wasteful number, since it uses less digits than its factorization.

7891484540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3012157 (or 3012155 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 50.

The square root of 7891484540 is about 88834.0280523179. The cubic root of 7891484540 is about 1990.9158465481.

The spelling of 7891484540 in words is "seven billion, eight hundred ninety-one million, four hundred eighty-four thousand, five hundred forty".