1653318816 has 48 divisors (see below), whose sum is σ = 4595258304. Its totient is φ = 518687744.

The previous prime is 1653318811. The next prime is 1653318907. The reversal of 1653318816 is 6188133561.

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (1653318811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 504900 + ... + 508163.

It is an arithmetic number, because the mean of its divisors is an integer number (95734548).

Almost surely, 2^1653318816 is an apocalyptic number.

1653318816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1653318816 is an abundant number, since it is smaller than the sum of its proper divisors (2941939488).

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

1653318816 is a wasteful number, since it uses less digits than its factorization.

1653318816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1013093 (or 1013085 counting only the distinct ones).

The product of its digits is 103680, while the sum is 42.

The square root of 1653318816 is about 40661.0233024207. The cubic root of 1653318816 is about 1182.4574887986.

The spelling of 1653318816 in words is "one billion, six hundred fifty-three million, three hundred eighteen thousand, eight hundred sixteen".