1665145002 has 32 divisors (see below), whose sum is σ = 3530786112. Its totient is φ = 521717504.

The previous prime is 1665144989. The next prime is 1665145039. The reversal of 1665145002 is 2005415661.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71053 + ... + 91535.

It is an arithmetic number, because the mean of its divisors is an integer number (110337066).

Almost surely, 2^1665145002 is an apocalyptic number.

1665145002 is an abundant number, since it is smaller than the sum of its proper divisors (1865641110).

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

1665145002 is a wasteful number, since it uses less digits than its factorization.

1665145002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21302.

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 1665145002 is about 40806.1882807008. The cubic root of 1665145002 is about 1185.2701650386.

The spelling of 1665145002 in words is "one billion, six hundred sixty-five million, one hundred forty-five thousand, two".