428611819 has 2 divisors, whose sum is σ = 428611820. Its totient is φ = 428611818.

The previous prime is 428611789. The next prime is 428611849. The reversal of 428611819 is 918116824.

It is a balanced prime because it is at equal distance from previous prime (428611789) and next prime (428611849).

It is a cyclic number.

It is not a de Polignac number, because 428611819 - 2⁵ = 428611787 is a prime.

It is a super-2 number, since 2×428611819² = 367416182772977522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (428611849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214305909 + 214305910.

It is an arithmetic number, because the mean of its divisors is an integer number (214305910).

Almost surely, 2^428611819 is an apocalyptic number.

428611819 is a deficient number, since it is larger than the sum of its proper divisors (1).

428611819 is an equidigital number, since it uses as much as digits as its factorization.

428611819 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27648, while the sum is 40.

The square root of 428611819 is about 20702.9422788163. The cubic root of 428611819 is about 753.9711254765.

The spelling of 428611819 in words is "four hundred twenty-eight million, six hundred eleven thousand, eight hundred nineteen".