1816262812 has 36 divisors (see below), whose sum is σ = 3981812520. Its totient is φ = 718520544.

The previous prime is 1816262809. The next prime is 1816262831. The reversal of 1816262812 is 2182626181.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 353862 + ... + 358957.

Almost surely, 2^1816262812 is an apocalyptic number.

It is an amenable number.

1816262812 is an abundant number, since it is smaller than the sum of its proper divisors (2165549708).

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

1816262812 is a wasteful number, since it uses less digits than its factorization.

1816262812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 712850 (or 712841 counting only the distinct ones).

The product of its digits is 18432, while the sum is 37.

The square root of 1816262812 is about 42617.6349883473. The cubic root of 1816262812 is about 1220.0928917893.

Adding to 1816262812 its reverse (2182626181), we get a palindrome (3998888993).

It can be divided in two parts, 1816 and 262812, that added together give a triangular number (264628 = T₇₂₇).

The spelling of 1816262812 in words is "one billion, eight hundred sixteen million, two hundred sixty-two thousand, eight hundred twelve".