1653284985 has 16 divisors (see below), whose sum is σ = 2885734080. Its totient is φ = 801592640.

The previous prime is 1653284953. The next prime is 1653284989. The reversal of 1653284985 is 5894823561.

It is not a de Polignac number, because 1653284985 - 2⁵ = 1653284953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1653284989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5009790 + ... + 5010119.

It is an arithmetic number, because the mean of its divisors is an integer number (180358380).

Almost surely, 2^1653284985 is an apocalyptic number.

1653284985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1653284985 is a deficient number, since it is larger than the sum of its proper divisors (1232449095).

1653284985 is a wasteful number, since it uses less digits than its factorization.

1653284985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10019928.

The product of its digits is 2073600, while the sum is 51.

The square root of 1653284985 is about 40660.6072876439. The cubic root of 1653284985 is about 1182.4494234067.

The spelling of 1653284985 in words is "one billion, six hundred fifty-three million, two hundred eighty-four thousand, nine hundred eighty-five".