1889123798116 has 27 divisors (see below), whose sum is σ = 3322729172217. Its totient is φ = 939796667040.

The previous prime is 1889123798087. The next prime is 1889123798189. The reversal of 1889123798116 is 6118973219881.

The square root of 1889123798116 is 1374454.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 1618823628900 + 270300169216 = 1272330^2 + 519904^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 580017960 + ... + 580021216.

Almost surely, 2^{1889123798116} is an apocalyptic number.

1889123798116 is the 1374454-th square number.

It is an amenable number.

1889123798116 is a deficient number, since it is larger than the sum of its proper divisors (1433605374101).

1889123798116 is an frugal number, since it uses more digits than its factorization.

1889123798116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6940 (or 3470 counting only the distinct ones).

The product of its digits is 10450944, while the sum is 64.

Multiplying 1889123798116 by its sum of digits (64), we get a square (120903923079424 = 10995632²).

The spelling of 1889123798116 in words is "one trillion, eight hundred eighty-nine billion, one hundred twenty-three million, seven hundred ninety-eight thousand, one hundred sixteen".