7861546331 has 2 divisors, whose sum is σ = 7861546332. Its totient is φ = 7861546330.

The previous prime is 7861546327. The next prime is 7861546361. The reversal of 7861546331 is 1336451687.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7861546331 - 2² = 7861546327 is a prime.

It is a super-2 number, since 2×7861546331² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (7861546361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3930773165 + 3930773166.

It is an arithmetic number, because the mean of its divisors is an integer number (3930773166).

Almost surely, 2^7861546331 is an apocalyptic number.

7861546331 is a deficient number, since it is larger than the sum of its proper divisors (1).

7861546331 is an equidigital number, since it uses as much as digits as its factorization.

7861546331 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 362880, while the sum is 44.

The square root of 7861546331 is about 88665.3615060583. The cubic root of 7861546331 is about 1988.3949863222.

The spelling of 7861546331 in words is "seven billion, eight hundred sixty-one million, five hundred forty-six thousand, three hundred thirty-one".