1827421992 has 64 divisors (see below), whose sum is σ = 5537649600. Its totient is φ = 553763520.

The previous prime is 1827421969. The next prime is 1827422011. The reversal of 1827421992 is 2991247281.

It is a super-2 number, since 2×1827421992² = 6678942273690496128, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 382183 + ... + 386934.

It is an arithmetic number, because the mean of its divisors is an integer number (86525775).

Almost surely, 2^1827421992 is an apocalyptic number.

1827421992 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1827421992 is an abundant number, since it is smaller than the sum of its proper divisors (3710227608).

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

1827421992 is a wasteful number, since it uses less digits than its factorization.

1827421992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 769143 (or 769133 counting only the distinct ones).

The product of its digits is 145152, while the sum is 45.

The square root of 1827421992 is about 42748.3565999911. The cubic root of 1827421992 is about 1222.5865556541.

The spelling of 1827421992 in words is "one billion, eight hundred twenty-seven million, four hundred twenty-one thousand, nine hundred ninety-two".