1890539219009 has 12 divisors (see below), whose sum is σ = 2199232666224. Its totient is φ = 1620437147784.

The previous prime is 1890539218969. The next prime is 1890539219047. The reversal of 1890539219009 is 9009129350981.

It is not a de Polignac number, because 1890539219009 - 2¹² = 1890539214913 is a prime.

It is a super-2 number, since 2×1890539219009² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1890539210009) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3358322 + ... + 3880644.

It is an arithmetic number, because the mean of its divisors is an integer number (183269388852).

Almost surely, 2^{1890539219009} is an apocalyptic number.

It is an amenable number.

1890539219009 is a deficient number, since it is larger than the sum of its proper divisors (308693447215).

1890539219009 is an equidigital number, since it uses as much as digits as its factorization.

1890539219009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 596204 (or 596197 counting only the distinct ones).

The product of its (nonzero) digits is 1574640, while the sum is 56.

The spelling of 1890539219009 in words is "one trillion, eight hundred ninety billion, five hundred thirty-nine million, two hundred nineteen thousand, nine".