1681730099 has 8 divisors (see below), whose sum is σ = 1922475360. Its totient is φ = 1441109376.

The previous prime is 1681730051. The next prime is 1681730101. The reversal of 1681730099 is 9900371861.

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

It is a de Polignac number, because none of the positive numbers 2^k-1681730099 is a prime.

It is a super-2 number, since 2×1681730099² = 5656432251765099602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1681732099) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134 + ... + 57995.

It is an arithmetic number, because the mean of its divisors is an integer number (240309420).

Almost surely, 2^1681730099 is an apocalyptic number.

1681730099 is a deficient number, since it is larger than the sum of its proper divisors (240745261).

1681730099 is an equidigital number, since it uses as much as digits as its factorization.

1681730099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62269.

The product of its (nonzero) digits is 81648, while the sum is 44.

The square root of 1681730099 is about 41008.9026797841. The cubic root of 1681730099 is about 1189.1923288608.

The spelling of 1681730099 in words is "one billion, six hundred eighty-one million, seven hundred thirty thousand, ninety-nine".