1642235041589 has 4 divisors (see below), whose sum is σ = 1643272462656. Its totient is φ = 1641197620524.

The previous prime is 1642235041549. The next prime is 1642235041687. The reversal of 1642235041589 is 9851405322461.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1642235041589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1642235041549) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 518708159 + ... + 518711324.

It is an arithmetic number, because the mean of its divisors is an integer number (410818115664).

Almost surely, 2^{1642235041589} is an apocalyptic number.

It is an amenable number.

1642235041589 is a deficient number, since it is larger than the sum of its proper divisors (1037421067).

1642235041589 is a wasteful number, since it uses less digits than its factorization.

1642235041589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1037421066.

The product of its (nonzero) digits is 2073600, while the sum is 50.

The spelling of 1642235041589 in words is "one trillion, six hundred forty-two billion, two hundred thirty-five million, forty-one thousand, five hundred eighty-nine".