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1530900000 = 2537557

1530900000 has 576 divisors, whose sum is σ = 6457086720. Its totient is φ = 349920000.

The previous prime is 1530899989. The next prime is 1530900011. The reversal of 1530900000 is 90351.

It is an interprime number because it is at equal distance from previous prime (1530899989) and next prime (1530900011).

It is a Harshad number since it is a multiple of its sum of digits (18).

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 95 ways as a sum of consecutive naturals, for example, 218699997 + ... + 218700003.

It is an arithmetic number, because the mean of its divisors is an integer number (11210220).

Almost surely, 21530900000 is an apocalyptic number.

1530900000 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 1530900000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3228543360).

1530900000 is an abundant number, since it is smaller than the sum of its proper divisors (4926186720).

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

1530900000 is an frugal number, since it uses more digits than its factorization.

1530900000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63 (or 17 counting only the distinct ones).

The product of its (nonzero) digits is 135, while the sum is 18.

The square root of 1530900000 is about 39126.7172147115. The cubic root of 1530900000 is about 1152.5212484887.

Adding to 1530900000 its reverse (90351), we get a palindrome (1530990351).

The spelling of 1530900000 in words is "one billion, five hundred thirty million, nine hundred thousand".