1653678616 has 32 divisors (see below), whose sum is σ = 3123216000. Its totient is φ = 820843776.

The previous prime is 1653678581. The next prime is 1653678641. The reversal of 1653678616 is 6168763561.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1653678616.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 748185 + ... + 750391.

It is an arithmetic number, because the mean of its divisors is an integer number (97600500).

Almost surely, 2^1653678616 is an apocalyptic number.

It is an amenable number.

1653678616 is a deficient number, since it is larger than the sum of its proper divisors (1469537384).

1653678616 is a wasteful number, since it uses less digits than its factorization.

1653678616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2851 (or 2847 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 49.

The square root of 1653678616 is about 40665.4474462043. The cubic root of 1653678616 is about 1182.5432591779.

The spelling of 1653678616 in words is "one billion, six hundred fifty-three million, six hundred seventy-eight thousand, six hundred sixteen".