1650224640 has 160 divisors (see below), whose sum is σ = 5314231296. Its totient is φ = 436838400.

The previous prime is 1650224599. The next prime is 1650224657. The reversal of 1650224640 is 464220561.

It is a tau number, because it is divible by the number of its divisors (160).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 1650224598 and 1650224607.

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, 1158969 + ... + 1160391.

Almost surely, 2^1650224640 is an apocalyptic number.

1650224640 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 1650224640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2657115648).

1650224640 is an abundant number, since it is smaller than the sum of its proper divisors (3664006656).

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

1650224640 is a wasteful number, since it uses less digits than its factorization.

1650224640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1600 (or 1584 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 1650224640 is about 40622.9570563247. The cubic root of 1650224640 is about 1181.7193741743.

The spelling of 1650224640 in words is "one billion, six hundred fifty million, two hundred twenty-four thousand, six hundred forty".