2123919360 has 416 divisors, whose sum is σ = 7926266880. Its totient is φ = 538509312.

The previous prime is 2123919307. The next prime is 2123919367. The reversal of 2123919360 is 639193212.

It is a happy number.

It is a super-2 number, since 2×2123919360² = 9022066895565619200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2123919367) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12717997 + ... + 12718163.

Almost surely, 2^2123919360 is an apocalyptic number.

2123919360 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 2123919360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3963133440).

2123919360 is an abundant number, since it is smaller than the sum of its proper divisors (5802347520).

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

2123919360 is a wasteful number, since it uses less digits than its factorization.

2123919360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228 (or 200 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 36.

The square root of 2123919360 is about 46085.9996094259. Note that the first 3 decimals coincide. The cubic root of 2123919360 is about 1285.4228266324.

Adding to 2123919360 its sum of digits (36), we get a square (2123919396 = 46086²).

The spelling of 2123919360 in words is "two billion, one hundred twenty-three million, nine hundred nineteen thousand, three hundred sixty".