1822011837840 has 80 divisors (see below), whose sum is σ = 6275818560000. Its totient is φ = 485869822848.

The previous prime is 1822011837823. The next prime is 1822011837869. The reversal of 1822011837840 is 487381102281.

1822011837840 is a `hidden beast` number, since 1 + 8 + 220 + 1 + 18 + 378 + 40 = 666.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 421759840 + ... + 421764159.

It is an arithmetic number, because the mean of its divisors is an integer number (78447732000).

Almost surely, 2^{1822011837840} is an apocalyptic number.

1822011837840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1822011837840 is an abundant number, since it is smaller than the sum of its proper divisors (4453806722160).

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

1822011837840 is a wasteful number, since it uses less digits than its factorization.

1822011837840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 843524021 (or 843524009 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 45.

The spelling of 1822011837840 in words is "one trillion, eight hundred twenty-two billion, eleven million, eight hundred thirty-seven thousand, eight hundred forty".