7530815481 has 16 divisors (see below), whose sum is σ = 11593835904. Its totient is φ = 4258957824.

The previous prime is 7530815473. The next prime is 7530815483. The reversal of 7530815481 is 1845180357.

7530815481 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 7530815481 - 2³ = 7530815473 is a prime.

It is a super-2 number, since 2×7530815481² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7530815483) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1846470 + ... + 1850543.

It is an arithmetic number, because the mean of its divisors is an integer number (724614744).

Almost surely, 2^7530815481 is an apocalyptic number.

It is an amenable number.

7530815481 is a deficient number, since it is larger than the sum of its proper divisors (4063020423).

7530815481 is a wasteful number, since it uses less digits than its factorization.

7530815481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3697120.

The product of its (nonzero) digits is 134400, while the sum is 42.

The square root of 7530815481 is about 86780.2712659969. The cubic root of 7530815481 is about 1960.1110135129. Note that the first 3 decimals are identical.

The spelling of 7530815481 in words is "seven billion, five hundred thirty million, eight hundred fifteen thousand, four hundred eighty-one".