1822578340 has 24 divisors (see below), whose sum is σ = 4175361792. Its totient is φ = 662755680.

The previous prime is 1822578271. The next prime is 1822578353. The reversal of 1822578340 is 438752281.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1822578293 and 1822578302.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4142004 + ... + 4142443.

It is an arithmetic number, because the mean of its divisors is an integer number (173973408).

Almost surely, 2^1822578340 is an apocalyptic number.

1822578340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1822578340 is an abundant number, since it is smaller than the sum of its proper divisors (2352783452).

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

1822578340 is a wasteful number, since it uses less digits than its factorization.

1822578340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8284467 (or 8284465 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 40.

The square root of 1822578340 is about 42691.6659314204. The cubic root of 1822578340 is about 1221.5054290668.

The spelling of 1822578340 in words is "one billion, eight hundred twenty-two million, five hundred seventy-eight thousand, three hundred forty".