2257019813 has 2 divisors, whose sum is σ = 2257019814. Its totient is φ = 2257019812.

The previous prime is 2257019803. The next prime is 2257019827. The reversal of 2257019813 is 3189107522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2194641409 + 62378404 = 46847^2 + 7898^2 .

It is a cyclic number.

It is not a de Polignac number, because 2257019813 - 2⁶ = 2257019749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2257019803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1128509906 + 1128509907.

It is an arithmetic number, because the mean of its divisors is an integer number (1128509907).

Almost surely, 2^2257019813 is an apocalyptic number.

It is an amenable number.

2257019813 is a deficient number, since it is larger than the sum of its proper divisors (1).

2257019813 is an equidigital number, since it uses as much as digits as its factorization.

2257019813 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30240, while the sum is 38.

The square root of 2257019813 is about 47508.1026036612. The cubic root of 2257019813 is about 1311.7320315572.

The spelling of 2257019813 in words is "two billion, two hundred fifty-seven million, nineteen thousand, eight hundred thirteen".