1653021772 has 12 divisors (see below), whose sum is σ = 2954337120. Its totient is φ = 808925456.

The previous prime is 1653021767. The next prime is 1653021803. The reversal of 1653021772 is 2771203561.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 4396147 + ... + 4396522.

It is an arithmetic number, because the mean of its divisors is an integer number (246194760).

Almost surely, 2^1653021772 is an apocalyptic number.

It is an amenable number.

1653021772 is a deficient number, since it is larger than the sum of its proper divisors (1301315348).

1653021772 is a wasteful number, since it uses less digits than its factorization.

1653021772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8792720 (or 8792718 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 34.

The square root of 1653021772 is about 40657.3704511248. The cubic root of 1653021772 is about 1182.3866690357.

The spelling of 1653021772 in words is "one billion, six hundred fifty-three million, twenty-one thousand, seven hundred seventy-two".