2243657900 has 144 divisors (see below), whose sum is σ = 5459650560. Its totient is φ = 793440000.

The previous prime is 2243657893. The next prime is 2243657903. The reversal of 2243657900 is 97563422.

It is not an unprimeable number, because it can be changed into a prime (2243657903) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11746805 + ... + 11746995.

It is an arithmetic number, because the mean of its divisors is an integer number (37914240).

Almost surely, 2^2243657900 is an apocalyptic number.

2243657900 is a gapful number since it is divisible by the number (20) 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 2243657900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2729825280).

2243657900 is an abundant number, since it is smaller than the sum of its proper divisors (3215992660).

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

2243657900 is a wasteful number, since it uses less digits than its factorization.

2243657900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456 (or 449 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 38.

The square root of 2243657900 is about 47367.2661233472. The cubic root of 2243657900 is about 1309.1383530230.

The spelling of 2243657900 in words is "two billion, two hundred forty-three million, six hundred fifty-seven thousand, nine hundred".