1820811362 has 8 divisors (see below), whose sum is σ = 2732118492. Its totient is φ = 910105200.

The previous prime is 1820811341. The next prime is 1820811373. The reversal of 1820811362 is 2631180281.

It can be written as a sum of positive squares in 2 ways, for example, as 1818937201 + 1874161 = 42649^2 + 1369^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142589 + ... + 154832.

Almost surely, 2^1820811362 is an apocalyptic number.

1820811362 is a deficient number, since it is larger than the sum of its proper divisors (911307130).

1820811362 is a wasteful number, since it uses less digits than its factorization.

1820811362 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300484.

The product of its (nonzero) digits is 4608, while the sum is 32.

The square root of 1820811362 is about 42670.9662651316. The cubic root of 1820811362 is about 1221.1105542059.

The spelling of 1820811362 in words is "one billion, eight hundred twenty million, eight hundred eleven thousand, three hundred sixty-two".