1812168924 has 24 divisors (see below), whose sum is σ = 4477123728. Its totient is φ = 568523520.

The previous prime is 1812168877. The next prime is 1812168931. The reversal of 1812168924 is 4298612181.

It is a super-2 number, since 2×1812168924² = 6567912418222635552, which contains 22 as substring.

It is a congruent number.

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, 4441387 + ... + 4441794.

It is an arithmetic number, because the mean of its divisors is an integer number (186546822).

Almost surely, 2^1812168924 is an apocalyptic number.

It is an amenable number.

1812168924 is an abundant number, since it is smaller than the sum of its proper divisors (2664954804).

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

1812168924 is a wasteful number, since it uses less digits than its factorization.

1812168924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8883205 (or 8883203 counting only the distinct ones).

The product of its digits is 55296, while the sum is 42.

The square root of 1812168924 is about 42569.5774468105. The cubic root of 1812168924 is about 1219.1754986301.

The spelling of 1812168924 in words is "one billion, eight hundred twelve million, one hundred sixty-eight thousand, nine hundred twenty-four".