1680953941 has 8 divisors (see below), whose sum is σ = 1749998520. Its totient is φ = 1612648128.

The previous prime is 1680953929. The next prime is 1680953983. The reversal of 1680953941 is 1493590861.

It can be written as a sum of positive squares in 4 ways, for example, as 165019716 + 1515934225 = 12846^2 + 38935^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1680953941 - 2⁵ = 1680953909 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1680953891 and 1680953900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1680953441) 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 7 ways as a sum of consecutive naturals, for example, 180046 + ... + 189151.

It is an arithmetic number, because the mean of its divisors is an integer number (218749815).

Almost surely, 2^1680953941 is an apocalyptic number.

It is an amenable number.

1680953941 is a deficient number, since it is larger than the sum of its proper divisors (69044579).

1680953941 is a wasteful number, since it uses less digits than its factorization.

1680953941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 369383.

The product of its (nonzero) digits is 233280, while the sum is 46.

The square root of 1680953941 is about 40999.4383010304. The cubic root of 1680953941 is about 1189.0093539644.

The spelling of 1680953941 in words is "one billion, six hundred eighty million, nine hundred fifty-three thousand, nine hundred forty-one".