1650655644 has 48 divisors (see below), whose sum is σ = 4209534336. Its totient is φ = 499262400.

The previous prime is 1650655639. The next prime is 1650655679. The reversal of 1650655644 is 4465560561.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1650655596 and 1650655605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60774 + ... + 83634.

It is an arithmetic number, because the mean of its divisors is an integer number (87698632).

Almost surely, 2^1650655644 is an apocalyptic number.

It is an amenable number.

1650655644 is an abundant number, since it is smaller than the sum of its proper divisors (2558878692).

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

1650655644 is a wasteful number, since it uses less digits than its factorization.

1650655644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23426 (or 23424 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 42.

The square root of 1650655644 is about 40628.2616413747. The cubic root of 1650655644 is about 1181.8222453086.

The spelling of 1650655644 in words is "one billion, six hundred fifty million, six hundred fifty-five thousand, six hundred forty-four".