1894564217468 has 24 divisors (see below), whose sum is σ = 3598639252992. Its totient is φ = 867529099584.

The previous prime is 1894564217453. The next prime is 1894564217479. The reversal of 1894564217468 is 8647124654981.

It is a happy number.

It is a super-2 number, since 2×1894564217468² (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, 143434055 + ... + 143447262.

It is an arithmetic number, because the mean of its divisors is an integer number (149943302208).

Almost surely, 2^{1894564217468} is an apocalyptic number.

It is an amenable number.

1894564217468 is a deficient number, since it is larger than the sum of its proper divisors (1704075035524).

1894564217468 is a wasteful number, since it uses less digits than its factorization.

1894564217468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286881461 (or 286881459 counting only the distinct ones).

The product of its digits is 92897280, while the sum is 65.

The spelling of 1894564217468 in words is "one trillion, eight hundred ninety-four billion, five hundred sixty-four million, two hundred seventeen thousand, four hundred sixty-eight".