1650649560 has 128 divisors (see below), whose sum is σ = 5842022400. Its totient is φ = 365114880.

The previous prime is 1650649537. The next prime is 1650649597. The reversal of 1650649560 is 659460561.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5655 + ... + 57734.

It is an arithmetic number, because the mean of its divisors is an integer number (45640800).

Almost surely, 2^1650649560 is an apocalyptic number.

1650649560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1650649560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2921011200).

1650649560 is an abundant number, since it is smaller than the sum of its proper divisors (4191372840).

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

1650649560 is a wasteful number, since it uses less digits than its factorization.

1650649560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63441 (or 63437 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 42.

The square root of 1650649560 is about 40628.1867673171. The cubic root of 1650649560 is about 1181.8207933168.

It can be divided in two parts, 16506 and 49560, that added together give a palindrome (66066).

The spelling of 1650649560 in words is "one billion, six hundred fifty million, six hundred forty-nine thousand, five hundred sixty".