2057220309 has 8 divisors (see below), whose sum is σ = 2743172992. Its totient is φ = 1371373920.

The previous prime is 2057220293. The next prime is 2057220353. The reversal of 2057220309 is 9030227502.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2057220309 - 2⁴ = 2057220293 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 (2057220509) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50649 + ... + 81729.

It is an arithmetic number, because the mean of its divisors is an integer number (342896624).

Almost surely, 2^2057220309 is an apocalyptic number.

It is an amenable number.

2057220309 is a deficient number, since it is larger than the sum of its proper divisors (685952683).

2057220309 is a wasteful number, since it uses less digits than its factorization.

2057220309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53147.

The product of its (nonzero) digits is 7560, while the sum is 30.

The square root of 2057220309 is about 45356.5905795398. The cubic root of 2057220309 is about 1271.8237606139.

The spelling of 2057220309 in words is "two billion, fifty-seven million, two hundred twenty thousand, three hundred nine".