1122643002 has 48 divisors (see below), whose sum is σ = 2436347808. Its totient is φ = 344710080.

The previous prime is 1122642967. The next prime is 1122643003. The reversal of 1122643002 is 2003462211.

It is a self number, because there is not a number n which added to its sum of digits gives 1122643002.

It is not an unprimeable number, because it can be changed into a prime (1122643003) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 691752 + ... + 693372.

It is an arithmetic number, because the mean of its divisors is an integer number (50757246).

Almost surely, 2^1122643002 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1122643002, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1218173904).

1122643002 is an abundant number, since it is smaller than the sum of its proper divisors (1313704806).

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

1122643002 is a wasteful number, since it uses less digits than its factorization.

1122643002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2335 (or 2322 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 1122643002 is about 33505.8651880533. The cubic root of 1122643002 is about 1039.3150698465.

The spelling of 1122643002 in words is "one billion, one hundred twenty-two million, six hundred forty-three thousand, two".