6466125919 has 4 divisors (see below), whose sum is σ = 7053955560. Its totient is φ = 5878296280.

The previous prime is 6466125871. The next prime is 6466125929. The reversal of 6466125919 is 9195216646.

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 6466125919 - 2²³ = 6457737311 is a prime.

It is a super-2 number, since 2×6466125919² = 83621568800727189122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6466125929) 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, 293914804 + ... + 293914825.

It is an arithmetic number, because the mean of its divisors is an integer number (1763488890).

Almost surely, 2^6466125919 is an apocalyptic number.

6466125919 is a deficient number, since it is larger than the sum of its proper divisors (587829641).

6466125919 is a wasteful number, since it uses less digits than its factorization.

6466125919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 587829640.

The product of its digits is 699840, while the sum is 49.

The square root of 6466125919 is about 80412.2249350184. The cubic root of 6466125919 is about 1863.0079974248.

The spelling of 6466125919 in words is "six billion, four hundred sixty-six million, one hundred twenty-five thousand, nine hundred nineteen".