428611019 has 2 divisors, whose sum is σ = 428611020. Its totient is φ = 428611018.

The previous prime is 428610977. The next prime is 428611111. The reversal of 428611019 is 910116824.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 428611019 - 2²⁸ = 160175563 is a prime.

It is a super-2 number, since 2×428611019² = 367414811216436722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (428611819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214305509 + 214305510.

It is an arithmetic number, because the mean of its divisors is an integer number (214305510).

Almost surely, 2^428611019 is an apocalyptic number.

428611019 is a deficient number, since it is larger than the sum of its proper divisors (1).

428611019 is an equidigital number, since it uses as much as digits as its factorization.

428611019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 32.

The square root of 428611019 is about 20702.9229578821. The cubic root of 428611019 is about 753.9706563828.

The spelling of 428611019 in words is "four hundred twenty-eight million, six hundred eleven thousand, nineteen".