1650440472 has 64 divisors (see below), whose sum is σ = 4352227200. Its totient is φ = 520116480.

The previous prime is 1650440447. The next prime is 1650440479. The reversal of 1650440472 is 2740440561.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1650440479) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 234103 + ... + 241049.

It is an arithmetic number, because the mean of its divisors is an integer number (68003550).

Almost surely, 2^1650440472 is an apocalyptic number.

1650440472 is a gapful number since it is divisible by the number (12) 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 1650440472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2176113600).

1650440472 is an abundant number, since it is smaller than the sum of its proper divisors (2701786728).

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

1650440472 is a wasteful number, since it uses less digits than its factorization.

1650440472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7496 (or 7492 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 33.

The square root of 1650440472 is about 40625.6134969061. The cubic root of 1650440472 is about 1181.7708907438.

The spelling of 1650440472 in words is "one billion, six hundred fifty million, four hundred forty thousand, four hundred seventy-two".