1650523252 has 72 divisors (see below), whose sum is σ = 3458851200. Its totient is φ = 686802816.

The previous prime is 1650523247. The next prime is 1650523271. The reversal of 1650523252 is 2523250561.

It is a happy number.

It is a super-3 number, since 3×1650523252³ (a number of 29 digits) contains 333 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1279824 + ... + 1281112.

It is an arithmetic number, because the mean of its divisors is an integer number (48039600).

Almost surely, 2^1650523252 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1650523252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1729425600).

1650523252 is an abundant number, since it is smaller than the sum of its proper divisors (1808327948).

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

1650523252 is a wasteful number, since it uses less digits than its factorization.

1650523252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1493 (or 1484 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 31.

The square root of 1650523252 is about 40626.6322995151. The cubic root of 1650523252 is about 1181.7906481683.

The spelling of 1650523252 in words is "one billion, six hundred fifty million, five hundred twenty-three thousand, two hundred fifty-two".