6461764018 has 8 divisors (see below), whose sum is σ = 9702142380. Its totient is φ = 3227716560.

The previous prime is 6461764009. The next prime is 6461764037. The reversal of 6461764018 is 8104671646.

It can be written as a sum of positive squares in 2 ways, for example, as 5879362329 + 582401689 = 76677^2 + 24133^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1580173 + ... + 1584256.

Almost surely, 2^6461764018 is an apocalyptic number.

6461764018 is a deficient number, since it is larger than the sum of its proper divisors (3240378362).

6461764018 is a wasteful number, since it uses less digits than its factorization.

6461764018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3165452.

The product of its (nonzero) digits is 193536, while the sum is 43.

The square root of 6461764018 is about 80385.0982334413. The cubic root of 6461764018 is about 1862.5889889646.

The spelling of 6461764018 in words is "six billion, four hundred sixty-one million, seven hundred sixty-four thousand, eighteen".