1892899838889 has 6 divisors (see below), whose sum is σ = 2734188656186. Its totient is φ = 1261933225920.

The previous prime is 1892899838887. The next prime is 1892899838897. The reversal of 1892899838889 is 9888389982981.

It can be written as a sum of positive squares in only one way, i.e., 1891670144400 + 1229694489 = 1375380^2 + 35067^2 .

It is not a de Polignac number, because 1892899838889 - 2¹ = 1892899838887 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1892899838799 and 1892899838808.

It is not an unprimeable number, because it can be changed into a prime (1892899838887) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 105161102152 + ... + 105161102169.

Almost surely, 2^{1892899838889} is an apocalyptic number.

It is an amenable number.

1892899838889 is a deficient number, since it is larger than the sum of its proper divisors (841288817297).

1892899838889 is a wasteful number, since it uses less digits than its factorization.

1892899838889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210322204327 (or 210322204324 counting only the distinct ones).

The product of its digits is 10319560704, while the sum is 90.

The spelling of 1892899838889 in words is "one trillion, eight hundred ninety-two billion, eight hundred ninety-nine million, eight hundred thirty-eight thousand, eight hundred eighty-nine".