1822049280 has 132 divisors (see below), whose sum is σ = 6313512972. Its totient is φ = 485867520.

The previous prime is 1822049279. The next prime is 1822049291. The reversal of 1822049280 is 829402281.

It can be written as a sum of positive squares in 2 ways, for example, as 227165184 + 1594884096 = 15072^2 + 39936^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26310 + ... + 65850.

Almost surely, 2^1822049280 is an apocalyptic number.

1822049280 is a gapful number since it is divisible by the number (10) 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 1822049280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3156756486).

1822049280 is an abundant number, since it is smaller than the sum of its proper divisors (4491463692).

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

1822049280 is a wasteful number, since it uses less digits than its factorization.

1822049280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39572 (or 39551 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 1822049280 is about 42685.4691903463. The cubic root of 1822049280 is about 1221.3872243255.

The spelling of 1822049280 in words is "one billion, eight hundred twenty-two million, forty-nine thousand, two hundred eighty".