2190944533909 has 16 divisors (see below), whose sum is σ = 2290125277440. Its totient is φ = 2093977025280.

The previous prime is 2190944533891. The next prime is 2190944533957. The reversal of 2190944533909 is 9093354490912.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2190944533909 - 2⁹ = 2190944533397 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 (2190944533709) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8787649 + ... + 9033529.

It is an arithmetic number, because the mean of its divisors is an integer number (143132829840).

Almost surely, 2^{2190944533909} is an apocalyptic number.

It is an amenable number.

2190944533909 is a deficient number, since it is larger than the sum of its proper divisors (99180743531).

2190944533909 is a wasteful number, since it uses less digits than its factorization.

2190944533909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250380.

The product of its (nonzero) digits is 9447840, while the sum is 58.

The spelling of 2190944533909 in words is "two trillion, one hundred ninety billion, nine hundred forty-four million, five hundred thirty-three thousand, nine hundred nine".