1893285185089 has 9 divisors (see below), whose sum is σ = 1899479295651. Its totient is φ = 1887111221160.

The previous prime is 1893285185083. The next prime is 1893285185137. The reversal of 1893285185089 is 9805815823981.

The square root of 1893285185089 is 1375967.

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., 862028687025 + 1031256498064 = 928455^2 + 1015508^2 .

It is not a de Polignac number, because 1893285185089 - 2¹⁹ = 1893284660801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1893285185083) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 455442999 + ... + 455447155.

Almost surely, 2^{1893285185089} is an apocalyptic number.

1893285185089 is the 1375967-th square number.

1893285185089 is the 687984-th centered octagonal number.

It is an amenable number.

1893285185089 is a deficient number, since it is larger than the sum of its proper divisors (6194110562).

1893285185089 is an frugal number, since it uses more digits than its factorization.

1893285185089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8976 (or 4488 counting only the distinct ones).

The product of its (nonzero) digits is 49766400, while the sum is 67.

The spelling of 1893285185089 in words is "one trillion, eight hundred ninety-three billion, two hundred eighty-five million, one hundred eighty-five thousand, eighty-nine".