1898065992190 has 16 divisors (see below), whose sum is σ = 3508857132192. Its totient is φ = 738706764384.

The previous prime is 1898065992169. The next prime is 1898065992191. The reversal of 1898065992190 is 912995608981.

It is a super-2 number, since 2×1898065992190² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1898065992191) 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, 2564953674 + ... + 2564954413.

It is an arithmetic number, because the mean of its divisors is an integer number (219303570762).

Almost surely, 2^{1898065992190} is an apocalyptic number.

1898065992190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1898065992190 is a deficient number, since it is larger than the sum of its proper divisors (1610791140002).

1898065992190 is a wasteful number, since it uses less digits than its factorization.

1898065992190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5129908131.

The product of its (nonzero) digits is 25194240, while the sum is 67.

The spelling of 1898065992190 in words is "one trillion, eight hundred ninety-eight billion, sixty-five million, nine hundred ninety-two thousand, one hundred ninety".