7531340985 has 32 divisors (see below), whose sum is σ = 15301774080. Its totient is φ = 3442898304.

The previous prime is 7531340983. The next prime is 7531340987. The reversal of 7531340985 is 5890431357.

7531340985 is a `hidden beast` number, since 7 + 531 + 34 + 0 + 9 + 85 = 666.

It is an interprime number because it is at equal distance from previous prime (7531340983) and next prime (7531340987).

It is not a de Polignac number, because 7531340985 - 2¹ = 7531340983 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 7531340985.

It is not an unprimeable number, because it can be changed into a prime (7531340983) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3983892 + ... + 3985781.

It is an arithmetic number, because the mean of its divisors is an integer number (478180440).

Almost surely, 2^7531340985 is an apocalyptic number.

It is an amenable number.

7531340985 is an abundant number, since it is smaller than the sum of its proper divisors (7770433095).

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

7531340985 is a wasteful number, since it uses less digits than its factorization.

7531340985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7969694 (or 7969688 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 45.

The square root of 7531340985 is about 86783.2989981367. The cubic root of 7531340985 is about 1960.1566049553.

The spelling of 7531340985 in words is "seven billion, five hundred thirty-one million, three hundred forty thousand, nine hundred eighty-five".