1326366820 has 48 divisors (see below), whose sum is σ = 3000191040. Its totient is φ = 490928256.

The previous prime is 1326366803. The next prime is 1326366841. The reversal of 1326366820 is 286636231.

It is a self number, because there is not a number n which added to its sum of digits gives 1326366820.

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 15 ways as a sum of consecutive naturals, for example, 24247 + ... + 56926.

It is an arithmetic number, because the mean of its divisors is an integer number (62503980).

Almost surely, 2^1326366820 is an apocalyptic number.

1326366820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1326366820 is an abundant number, since it is smaller than the sum of its proper divisors (1673824220).

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

1326366820 is a wasteful number, since it uses less digits than its factorization.

1326366820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81244 (or 81242 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 37.

The square root of 1326366820 is about 36419.3193236776. The cubic root of 1326366820 is about 1098.7221580116.

The spelling of 1326366820 in words is "one billion, three hundred twenty-six million, three hundred sixty-six thousand, eight hundred twenty".