1681528007 has 2 divisors, whose sum is σ = 1681528008. Its totient is φ = 1681528006.

The previous prime is 1681528001. The next prime is 1681528031. The reversal of 1681528007 is 7008251861.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1681528007 - 2⁸ = 1681527751 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1681528001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 840764003 + 840764004.

It is an arithmetic number, because the mean of its divisors is an integer number (840764004).

Almost surely, 2^1681528007 is an apocalyptic number.

1681528007 is a deficient number, since it is larger than the sum of its proper divisors (1).

1681528007 is an equidigital number, since it uses as much as digits as its factorization.

1681528007 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26880, while the sum is 38.

The square root of 1681528007 is about 41006.4386041997. The cubic root of 1681528007 is about 1189.1446922268.

Adding to 1681528007 its reverse (7008251861), we get a palindrome (8689779868).

The spelling of 1681528007 in words is "one billion, six hundred eighty-one million, five hundred twenty-eight thousand, seven".