1820533692 has 24 divisors (see below), whose sum is σ = 4274973136. Its totient is φ = 602978688.

The previous prime is 1820533669. The next prime is 1820533709. The reversal of 1820533692 is 2963350281.

It is a self number, because there is not a number n which added to its sum of digits gives 1820533692.

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, 481273 + ... + 485040.

Almost surely, 2^1820533692 is an apocalyptic number.

1820533692 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1820533692 is an abundant number, since it is smaller than the sum of its proper divisors (2454439444).

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

1820533692 is a wasteful number, since it uses less digits than its factorization.

1820533692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 966477 (or 966475 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 39.

The square root of 1820533692 is about 42667.7125236402. The cubic root of 1820533692 is about 1221.0484787649.

It can be divided in two parts, 182053 and 3692, that added together give a triangular number (185745 = T₆₀₉).

The spelling of 1820533692 in words is "one billion, eight hundred twenty million, five hundred thirty-three thousand, six hundred ninety-two".