1869828845394 has 16 divisors (see below), whose sum is σ = 3959637555168. Its totient is φ = 586612971072.

The previous prime is 1869828845389. The next prime is 1869828845407. The reversal of 1869828845394 is 4935488289681.

It is a super-2 number, since 2×1869828845394² (a number of 25 digits) contains 22 as substring.

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, 9165827572 + ... + 9165827775.

It is an arithmetic number, because the mean of its divisors is an integer number (247477347198).

Almost surely, 2^{1869828845394} is an apocalyptic number.

1869828845394 is an abundant number, since it is smaller than the sum of its proper divisors (2089808709774).

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

1869828845394 is a wasteful number, since it uses less digits than its factorization.

1869828845394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18331655369.

The product of its digits is 955514880, while the sum is 75.

The spelling of 1869828845394 in words is "one trillion, eight hundred sixty-nine billion, eight hundred twenty-eight million, eight hundred forty-five thousand, three hundred ninety-four".