245538019 has 2 divisors, whose sum is σ = 245538020. Its totient is φ = 245538018.

The previous prime is 245538001. The next prime is 245538023. The reversal of 245538019 is 910835542.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 245538019 - 2⁷ = 245537891 is a prime.

It is a super-2 number, since 2×245538019² = 120577837548888722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (245538119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122769009 + 122769010.

It is an arithmetic number, because the mean of its divisors is an integer number (122769010).

Almost surely, 2^245538019 is an apocalyptic number.

245538019 is a deficient number, since it is larger than the sum of its proper divisors (1).

245538019 is an equidigital number, since it uses as much as digits as its factorization.

245538019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43200, while the sum is 37.

The square root of 245538019 is about 15669.6528040668. The cubic root of 245538019 is about 626.1901750149.

The spelling of 245538019 in words is "two hundred forty-five million, five hundred thirty-eight thousand, nineteen".