1018381920200 has 24 divisors (see below), whose sum is σ = 2367737964930. Its totient is φ = 407352768000.

The previous prime is 1018381920181. The next prime is 1018381920203. The reversal of 1018381920200 is 20291838101.

It can be written as a sum of positive squares in 3 ways, for example, as 730659105796 + 287722814404 = 854786^2 + 536398^2 .

It is not an unprimeable number, because it can be changed into a prime (1018381920203) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2545954601 + ... + 2545955000.

Almost surely, 2^{1018381920200} is an apocalyptic number.

1018381920200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1018381920200 is an abundant number, since it is smaller than the sum of its proper divisors (1349356044730).

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

1018381920200 is a wasteful number, since it uses less digits than its factorization.

1018381920200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5091909617 (or 5091909608 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 35.

The spelling of 1018381920200 in words is "one trillion, eighteen billion, three hundred eighty-one million, nine hundred twenty thousand, two hundred".