1683821552 has 80 divisors (see below), whose sum is σ = 3812202432. Its totient is φ = 705576960.

The previous prime is 1683821551. The next prime is 1683821561. The reversal of 1683821552 is 2551283861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1683821551) 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, 1317938 + ... + 1319214.

Almost surely, 2^1683821552 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 1683821552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1906101216).

1683821552 is an abundant number, since it is smaller than the sum of its proper divisors (2128380880).

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

1683821552 is a wasteful number, since it uses less digits than its factorization.

1683821552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1546 (or 1540 counting only the distinct ones).

The product of its digits is 115200, while the sum is 41.

The square root of 1683821552 is about 41034.3947439218. The cubic root of 1683821552 is about 1189.6850971015.

The spelling of 1683821552 in words is "one billion, six hundred eighty-three million, eight hundred twenty-one thousand, five hundred fifty-two".