1681075165 has 64 divisors (see below), whose sum is σ = 2582876160. Its totient is φ = 1020096000.

The previous prime is 1681075157. The next prime is 1681075169. The reversal of 1681075165 is 5615701861.

It is not a de Polignac number, because 1681075165 - 2³ = 1681075157 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1681075169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2432470 + ... + 2433160.

It is an arithmetic number, because the mean of its divisors is an integer number (40357440).

Almost surely, 2^1681075165 is an apocalyptic number.

It is an amenable number.

1681075165 is a deficient number, since it is larger than the sum of its proper divisors (901800995).

1681075165 is a wasteful number, since it uses less digits than its factorization.

1681075165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 874.

The product of its (nonzero) digits is 50400, while the sum is 40.

The square root of 1681075165 is about 41000.9166360949. The cubic root of 1681075165 is about 1189.0379355537.

The spelling of 1681075165 in words is "one billion, six hundred eighty-one million, seventy-five thousand, one hundred sixty-five".