6428145019 has 4 divisors (see below), whose sum is σ = 6437870560. Its totient is φ = 6418419480.

The previous prime is 6428145011. The next prime is 6428145029. The reversal of 6428145019 is 9105418246.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6428145019 - 2³ = 6428145011 is a prime.

It is a super-2 number, since 2×6428145019² = 82642096770589020722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6428145011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4861779 + ... + 4863100.

It is an arithmetic number, because the mean of its divisors is an integer number (1609467640).

Almost surely, 2^6428145019 is an apocalyptic number.

6428145019 is a deficient number, since it is larger than the sum of its proper divisors (9725541).

6428145019 is an equidigital number, since it uses as much as digits as its factorization.

6428145019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9725540.

The product of its (nonzero) digits is 69120, while the sum is 40.

The square root of 6428145019 is about 80175.7133987594. The cubic root of 6428145019 is about 1859.3531703725.

The spelling of 6428145019 in words is "six billion, four hundred twenty-eight million, one hundred forty-five thousand, nineteen".