345663419 has 2 divisors, whose sum is σ = 345663420. Its totient is φ = 345663418.

The previous prime is 345663407. The next prime is 345663449. The reversal of 345663419 is 914366543.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-345663419 is a prime.

It is a super-2 number, since 2×345663419² = 238966398469539122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (345663449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172831709 + 172831710.

It is an arithmetic number, because the mean of its divisors is an integer number (172831710).

Almost surely, 2^345663419 is an apocalyptic number.

345663419 is a deficient number, since it is larger than the sum of its proper divisors (1).

345663419 is an equidigital number, since it uses as much as digits as its factorization.

345663419 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 233280, while the sum is 41.

The square root of 345663419 is about 18592.0256830718. The cubic root of 345663419 is about 701.8071800737.

The spelling of 345663419 in words is "three hundred forty-five million, six hundred sixty-three thousand, four hundred nineteen".