1812164292 has 48 divisors (see below), whose sum is σ = 4945483200. Its totient is φ = 572261760.

The previous prime is 1812164279. The next prime is 1812164293. The reversal of 1812164292 is 2924612181.

1812164292 is a `hidden beast` number, since 1 + 8 + 1 + 2 + 1 + 642 + 9 + 2 = 666.

It is a super-2 number, since 2×1812164292² = 6567878842399722528, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (1812164293) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 439509 + ... + 443612.

It is an arithmetic number, because the mean of its divisors is an integer number (103030900).

Almost surely, 2^1812164292 is an apocalyptic number.

1812164292 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1812164292 is an abundant number, since it is smaller than the sum of its proper divisors (3133318908).

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

1812164292 is a wasteful number, since it uses less digits than its factorization.

1812164292 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 883153 (or 883145 counting only the distinct ones).

The product of its digits is 13824, while the sum is 36.

The square root of 1812164292 is about 42569.5230417255. The cubic root of 1812164292 is about 1219.1744598702.

The spelling of 1812164292 in words is "one billion, eight hundred twelve million, one hundred sixty-four thousand, two hundred ninety-two".