405315019 has 2 divisors, whose sum is σ = 405315020. Its totient is φ = 405315018.

The previous prime is 405315017. The next prime is 405315061. The reversal of 405315019 is 910513504.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 405315019 - 2¹ = 405315017 is a prime.

It is a super-2 number, since 2×405315019² = 328560529253940722, which contains 22 as substring.

Together with 405315017, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (405315013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202657509 + 202657510.

It is an arithmetic number, because the mean of its divisors is an integer number (202657510).

Almost surely, 2^405315019 is an apocalyptic number.

405315019 is a deficient number, since it is larger than the sum of its proper divisors (1).

405315019 is an equidigital number, since it uses as much as digits as its factorization.

405315019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2700, while the sum is 28.

The square root of 405315019 is about 20132.4369861177. The cubic root of 405315019 is about 740.0554006490.

The spelling of 405315019 in words is "four hundred five million, three hundred fifteen thousand, nineteen".