1665056315 has 32 divisors (see below), whose sum is σ = 2233224000. Its totient is φ = 1183311360.

The previous prime is 1665056311. The next prime is 1665056339. The reversal of 1665056315 is 5136505661.

It is not a de Polignac number, because 1665056315 - 2² = 1665056311 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1665056311) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 656600 + ... + 659130.

It is an arithmetic number, because the mean of its divisors is an integer number (69788250).

Almost surely, 2^1665056315 is an apocalyptic number.

1665056315 is a deficient number, since it is larger than the sum of its proper divisors (568167685).

1665056315 is a wasteful number, since it uses less digits than its factorization.

1665056315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2927.

The product of its (nonzero) digits is 81000, while the sum is 38.

The square root of 1665056315 is about 40805.1015805622. The cubic root of 1665056315 is about 1185.2491218419.

The spelling of 1665056315 in words is "one billion, six hundred sixty-five million, fifty-six thousand, three hundred fifteen".