6414640019 has 4 divisors (see below), whose sum is σ = 6415448760. Its totient is φ = 6413831280.

The previous prime is 6414639983. The next prime is 6414640031. The reversal of 6414640019 is 9100464146.

It is a happy number.

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 6414640019 - 2¹⁶ = 6414574483 is a prime.

It is a super-2 number, since 2×6414640019² = 82295213146712640722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6414640619) 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, 392354 + ... + 408375.

It is an arithmetic number, because the mean of its divisors is an integer number (1603862190).

Almost surely, 2^6414640019 is an apocalyptic number.

6414640019 is a deficient number, since it is larger than the sum of its proper divisors (808741).

6414640019 is an equidigital number, since it uses as much as digits as its factorization.

6414640019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 808740.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 6414640019 is about 80091.4478518150. The cubic root of 6414640019 is about 1858.0501417841.

The spelling of 6414640019 in words is "six billion, four hundred fourteen million, six hundred forty thousand, nineteen".