1863303450220 has 24 divisors (see below), whose sum is σ = 3996191231424. Its totient is φ = 729463478016.

The previous prime is 1863303450209. The next prime is 1863303450223. The reversal of 1863303450220 is 220543033681.

It is a self number, because there is not a number n which added to its sum of digits gives 1863303450220.

It is not an unprimeable number, because it can be changed into a prime (1863303450223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 991117917 + ... + 991119796.

It is an arithmetic number, because the mean of its divisors is an integer number (166507967976).

Almost surely, 2^{1863303450220} is an apocalyptic number.

1863303450220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1863303450220 is an abundant number, since it is smaller than the sum of its proper divisors (2132887781204).

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

1863303450220 is a wasteful number, since it uses less digits than its factorization.

1863303450220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1982237769 (or 1982237767 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 37.

The spelling of 1863303450220 in words is "one trillion, eight hundred sixty-three billion, three hundred three million, four hundred fifty thousand, two hundred twenty".