1890223618163 has 4 divisors (see below), whose sum is σ = 1890404286528. Its totient is φ = 1890042949800.

The previous prime is 1890223618141. The next prime is 1890223618181. The reversal of 1890223618163 is 3618163220981.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1890223618163 - 2²⁴ = 1890206840947 is a prime.

It is a super-2 number, since 2×1890223618163² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1890223618123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90318488 + ... + 90339413.

It is an arithmetic number, because the mean of its divisors is an integer number (472601071632).

Almost surely, 2^{1890223618163} is an apocalyptic number.

1890223618163 is a deficient number, since it is larger than the sum of its proper divisors (180668365).

1890223618163 is a wasteful number, since it uses less digits than its factorization.

1890223618163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180668364.

The product of its (nonzero) digits is 746496, while the sum is 50.

The spelling of 1890223618163 in words is "one trillion, eight hundred ninety billion, two hundred twenty-three million, six hundred eighteen thousand, one hundred sixty-three".