1686958241 has 16 divisors (see below), whose sum is σ = 1754645376. Its totient is φ = 1620694656.

The previous prime is 1686958219. The next prime is 1686958261. The reversal of 1686958241 is 1428596861.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1686958241 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1686958241.

It is not an unprimeable number, because it can be changed into a prime (1686958201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2049356 + ... + 2050178.

It is an arithmetic number, because the mean of its divisors is an integer number (109665336).

Almost surely, 2^1686958241 is an apocalyptic number.

It is an amenable number.

1686958241 is a deficient number, since it is larger than the sum of its proper divisors (67687135).

1686958241 is an equidigital number, since it uses as much as digits as its factorization.

1686958241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1592.

The product of its digits is 829440, while the sum is 50.

The square root of 1686958241 is about 41072.5972030014. The cubic root of 1686958241 is about 1190.4233695904.

The spelling of 1686958241 in words is "one billion, six hundred eighty-six million, nine hundred fifty-eight thousand, two hundred forty-one".