1494740640 has 384 divisors, whose sum is σ = 5434490880. Its totient is φ = 342835200.

The previous prime is 1494740617. The next prime is 1494740647. The reversal of 1494740640 is 460474941.

1494740640 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (1494740647) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4806085 + ... + 4806395.

It is an arithmetic number, because the mean of its divisors is an integer number (14152320).

Almost surely, 2^1494740640 is an apocalyptic number.

1494740640 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 1494740640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2717245440).

1494740640 is an abundant number, since it is smaller than the sum of its proper divisors (3939750240).

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

1494740640 is a wasteful number, since it uses less digits than its factorization.

1494740640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396 (or 388 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 39.

The square root of 1494740640 is about 38661.8757951551. The cubic root of 1494740640 is about 1143.3747949012.

The spelling of 1494740640 in words is "one billion, four hundred ninety-four million, seven hundred forty thousand, six hundred forty".