1822220020188 has 72 divisors (see below), whose sum is σ = 4898582845520. Its totient is φ = 569505530880.

The previous prime is 1822220020171. The next prime is 1822220020241. The reversal of 1822220020188 is 8810200222281.

It is a super-4 number, since 4×1822220020188⁴ (a number of 50 digits) contains 4444 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 an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13665943 + ... + 13798638.

Almost surely, 2^{1822220020188} is an apocalyptic number.

1822220020188 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1822220020188 is an abundant number, since it is smaller than the sum of its proper divisors (3076362825332).

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

1822220020188 is a wasteful number, since it uses less digits than its factorization.

1822220020188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27464707 (or 27464702 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 36.

The spelling of 1822220020188 in words is "one trillion, eight hundred twenty-two billion, two hundred twenty million, twenty thousand, one hundred eighty-eight".