1822135880 has 32 divisors (see below), whose sum is σ = 4167021240. Its totient is φ = 716904960.

The previous prime is 1822135873. The next prime is 1822135883. The reversal of 1822135880 is 885312281.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1138522564 + 683613316 = 33742^2 + 26146^2 .

It is not an unprimeable number, because it can be changed into a prime (1822135883) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 370949 + ... + 375828.

Almost surely, 2^1822135880 is an apocalyptic number.

1822135880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1822135880 is an abundant number, since it is smaller than the sum of its proper divisors (2344885360).

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

1822135880 is a wasteful number, since it uses less digits than its factorization.

1822135880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 746849 (or 746845 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 38.

The square root of 1822135880 is about 42686.4835750147. The cubic root of 1822135880 is about 1221.4065744165.

The spelling of 1822135880 in words is "one billion, eight hundred twenty-two million, one hundred thirty-five thousand, eight hundred eighty".