1681140517 has 16 divisors (see below), whose sum is σ = 1932906240. Its totient is φ = 1432303488.

The previous prime is 1681140511. The next prime is 1681140551. The reversal of 1681140517 is 7150411861.

It is not a de Polignac number, because 1681140517 - 2⁷ = 1681140389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1681140511) 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, 1161088 + ... + 1162534.

It is an arithmetic number, because the mean of its divisors is an integer number (120806640).

Almost surely, 2^1681140517 is an apocalyptic number.

It is an amenable number.

1681140517 is a deficient number, since it is larger than the sum of its proper divisors (251765723).

1681140517 is a wasteful number, since it uses less digits than its factorization.

1681140517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2340.

The product of its (nonzero) digits is 6720, while the sum is 34.

The square root of 1681140517 is about 41001.7135861417. The cubic root of 1681140517 is about 1189.0533433518.

The spelling of 1681140517 in words is "one billion, six hundred eighty-one million, one hundred forty thousand, five hundred seventeen".