1653668656 has 10 divisors (see below), whose sum is σ = 3203983052. Its totient is φ = 826834320.

The previous prime is 1653668647. The next prime is 1653668663. The reversal of 1653668656 is 6568663561.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51677130 + ... + 51677161.

Almost surely, 2^1653668656 is an apocalyptic number.

1653668656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1653668656 is a deficient number, since it is larger than the sum of its proper divisors (1550314396).

1653668656 is a wasteful number, since it uses less digits than its factorization.

1653668656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103354299 (or 103354293 counting only the distinct ones).

The product of its digits is 4665600, while the sum is 52.

The square root of 1653668656 is about 40665.3249833319. The cubic root of 1653668656 is about 1182.5408850457.

The spelling of 1653668656 in words is "one billion, six hundred fifty-three million, six hundred sixty-eight thousand, six hundred fifty-six".