6454186464 has 144 divisors (see below), whose sum is σ = 19127044944. Its totient is φ = 1902827520.

The previous prime is 6454186439. The next prime is 6454186549. The reversal of 6454186464 is 4646814546.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 422284 + ... + 437300.

It is an arithmetic number, because the mean of its divisors is an integer number (132826701).

Almost surely, 2^6454186464 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6454186464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9563522472).

6454186464 is an abundant number, since it is smaller than the sum of its proper divisors (12672858480).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6454186464 is a wasteful number, since it uses less digits than its factorization.

6454186464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15089 (or 15070 counting only the distinct ones).

The product of its digits is 2211840, while the sum is 48.

The square root of 6454186464 is about 80337.9515795617. The cubic root of 6454186464 is about 1861.8606331989.

The spelling of 6454186464 in words is "six billion, four hundred fifty-four million, one hundred eighty-six thousand, four hundred sixty-four".