1464806640 has 120 divisors (see below), whose sum is σ = 4991336784. Its totient is φ = 355097600.

The previous prime is 1464806627. The next prime is 1464806657. The reversal of 1464806640 is 466084641.

It is a tau number, because it is divible by the number of its divisors (120).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3820 + ... + 54260.

Almost surely, 2^1464806640 is an apocalyptic number.

1464806640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1464806640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2495668392).

1464806640 is an abundant number, since it is smaller than the sum of its proper divisors (3526530144).

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

1464806640 is a wasteful number, since it uses less digits than its factorization.

1464806640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50479 (or 50462 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 39.

The square root of 1464806640 is about 38272.7924249068. The cubic root of 1464806640 is about 1135.6907799189.

The spelling of 1464806640 in words is "one billion, four hundred sixty-four million, eight hundred six thousand, six hundred forty".