7531340987 has 2 divisors, whose sum is σ = 7531340988. Its totient is φ = 7531340986.

The previous prime is 7531340983. The next prime is 7531341017. The reversal of 7531340987 is 7890431357.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7531340987 - 2² = 7531340983 is a prime.

It is a super-2 number, since 2×7531340987² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (7531340983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3765670493 + 3765670494.

It is an arithmetic number, because the mean of its divisors is an integer number (3765670494).

Almost surely, 2^7531340987 is an apocalyptic number.

7531340987 is a deficient number, since it is larger than the sum of its proper divisors (1).

7531340987 is an equidigital number, since it uses as much as digits as its factorization.

7531340987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 635040, while the sum is 47.

The square root of 7531340987 is about 86783.2990096597. The cubic root of 7531340987 is about 1960.1566051288.

The spelling of 7531340987 in words is "seven billion, five hundred thirty-one million, three hundred forty thousand, nine hundred eighty-seven".