1530493440 has 400 divisors, whose sum is σ = 5776692768. Its totient is φ = 345612288.

The previous prime is 1530493429. The next prime is 1530493483. The reversal of 1530493440 is 443940351.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 18439639 + ... + 18439721.

Almost surely, 2^1530493440 is an apocalyptic number.

1530493440 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 1530493440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2888346384).

1530493440 is an abundant number, since it is smaller than the sum of its proper divisors (4246199328).

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

1530493440 is an frugal number, since it uses more digits than its factorization.

1530493440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137 (or 100 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 1530493440 is about 39121.5214428069. The cubic root of 1530493440 is about 1152.4192147125.

The spelling of 1530493440 in words is "one billion, five hundred thirty million, four hundred ninety-three thousand, four hundred forty".