2101450493 has 4 divisors (see below), whose sum is σ = 2101733088. Its totient is φ = 2101167900.

The previous prime is 2101450487. The next prime is 2101450501. The reversal of 2101450493 is 3940541012.

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 not a de Polignac number, because 2101450493 - 2⁸ = 2101450237 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101450423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 129833 + ... + 145118.

It is an arithmetic number, because the mean of its divisors is an integer number (525433272).

Almost surely, 2^2101450493 is an apocalyptic number.

It is an amenable number.

2101450493 is a deficient number, since it is larger than the sum of its proper divisors (282595).

2101450493 is an equidigital number, since it uses as much as digits as its factorization.

2101450493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282594.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 2101450493 is about 45841.5803937866. The cubic root of 2101450493 is about 1280.8739338161.

The spelling of 2101450493 in words is "two billion, one hundred one million, four hundred fifty thousand, four hundred ninety-three".