1818621145190 has 16 divisors (see below), whose sum is σ = 3273539089392. Its totient is φ = 727443785184.

The previous prime is 1818621145169. The next prime is 1818621145241. The reversal of 1818621145190 is 915411268181.

It is a super-2 number, since 2×1818621145190² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1357937 + ... + 2341203.

It is an arithmetic number, because the mean of its divisors is an integer number (204596193087).

Almost surely, 2^{1818621145190} is an apocalyptic number.

1818621145190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1818621145190 is a deficient number, since it is larger than the sum of its proper divisors (1454917944202).

1818621145190 is a wasteful number, since it uses less digits than its factorization.

1818621145190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1168231.

The product of its (nonzero) digits is 138240, while the sum is 47.

The spelling of 1818621145190 in words is "one trillion, eight hundred eighteen billion, six hundred twenty-one million, one hundred forty-five thousand, one hundred ninety".