6464641954 has 8 divisors (see below), whose sum is σ = 9933474348. Its totient is φ = 3153483840.

The previous prime is 6464641949. The next prime is 6464641987. The reversal of 6464641954 is 4591464646.

It can be written as a sum of positive squares in 2 ways, for example, as 6452426929 + 12215025 = 80327^2 + 3495^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 6464641898 and 6464641907.

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, 39418467 + ... + 39418630.

Almost surely, 2^6464641954 is an apocalyptic number.

6464641954 is a deficient number, since it is larger than the sum of its proper divisors (3468832394).

6464641954 is a wasteful number, since it uses less digits than its factorization.

6464641954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78837140.

The product of its digits is 2488320, while the sum is 49.

The square root of 6464641954 is about 80402.9971705035. The cubic root of 6464641954 is about 1862.8654674557.

The spelling of 6464641954 in words is "six billion, four hundred sixty-four million, six hundred forty-one thousand, nine hundred fifty-four".