1656165105 has 48 divisors (see below), whose sum is σ = 3336428160. Its totient is φ = 744263424.

The previous prime is 1656165097. The next prime is 1656165107. The reversal of 1656165105 is 5015616561.

1656165105 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1656165105 - 2³ = 1656165097 is a prime.

It is a super-2 number, since 2×1656165105² = 5485765710039322050, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1656165105.

It is not an unprimeable number, because it can be changed into a prime (1656165107) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 25972 + ... + 63141.

It is an arithmetic number, because the mean of its divisors is an integer number (69508920).

Almost surely, 2^1656165105 is an apocalyptic number.

1656165105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1656165105 is an abundant number, since it is smaller than the sum of its proper divisors (1680263055).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1656165105 is a wasteful number, since it uses less digits than its factorization.

1656165105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89190 (or 89187 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 36.

The square root of 1656165105 is about 40696.0084652045. The cubic root of 1656165105 is about 1183.1356572972.

The spelling of 1656165105 in words is "one billion, six hundred fifty-six million, one hundred sixty-five thousand, one hundred five".