1494947664 has 480 divisors, whose sum is σ = 5416320000. Its totient is φ = 397789056.

The previous prime is 1494947653. The next prime is 1494947711. The reversal of 1494947664 is 4667494941.

1494947664 is a `hidden beast` number, since 1 + 494 + 94 + 7 + 6 + 64 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 1494947664.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 25338067 + ... + 25338125.

It is an arithmetic number, because the mean of its divisors is an integer number (11284000).

Almost surely, 2^1494947664 is an apocalyptic number.

1494947664 is a gapful number since it is divisible by the number (14) 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 1494947664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2708160000).

1494947664 is an abundant number, since it is smaller than the sum of its proper divisors (3921372336).

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

1494947664 is an equidigital number, since it uses as much as digits as its factorization.

1494947664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122 (or 90 counting only the distinct ones).

The product of its digits is 5225472, while the sum is 54.

The square root of 1494947664 is about 38664.5530686700. The cubic root of 1494947664 is about 1143.4275788848.

The spelling of 1494947664 in words is "one billion, four hundred ninety-four million, nine hundred forty-seven thousand, six hundred sixty-four".