2019745459 has 2 divisors, whose sum is σ = 2019745460. Its totient is φ = 2019745458.

The previous prime is 2019745457. The next prime is 2019745487. The reversal of 2019745459 is 9545479102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2019745459 - 2¹ = 2019745457 is a prime.

It is a super-2 number, since 2×2019745459² = 8158743438302241362, which contains 22 as substring.

Together with 2019745457, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2019745457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1009872729 + 1009872730.

It is an arithmetic number, because the mean of its divisors is an integer number (1009872730).

Almost surely, 2^2019745459 is an apocalyptic number.

2019745459 is a deficient number, since it is larger than the sum of its proper divisors (1).

2019745459 is an equidigital number, since it uses as much as digits as its factorization.

2019745459 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 453600, while the sum is 46.

The square root of 2019745459 is about 44941.5782878172. The cubic root of 2019745459 is about 1264.0537657640.

It can be divided in two parts, 20197 and 45459, that added together give a palindrome (65656).

The spelling of 2019745459 in words is "two billion, nineteen million, seven hundred forty-five thousand, four hundred fifty-nine".