1818190910000 has 50 divisors (see below), whose sum is σ = 4402022036412. Its totient is φ = 727276360000.

The previous prime is 1818190909981. The next prime is 1818190910009. The reversal of 1818190910000 is 190918181.

It is a tau number, because it is divible by the number of its divisors (50).

It is not an unprimeable number, because it can be changed into a prime (1818190910009) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 90899546 + ... + 90919545.

Almost surely, 2^{1818190910000} is an apocalyptic number.

1818190910000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1818190910000 is an abundant number, since it is smaller than the sum of its proper divisors (2583831126412).

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

1818190910000 is an equidigital number, since it uses as much as digits as its factorization.

1818190910000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181819119 (or 181819098 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 38.

The spelling of 1818190910000 in words is "one trillion, eight hundred eighteen billion, one hundred ninety million, nine hundred ten thousand".