1630513500 has 384 divisors, whose sum is σ = 6239600640. Its totient is φ = 320544000.

The previous prime is 1630513457. The next prime is 1630513513. The reversal of 1630513500 is 53150361.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 2194129 + ... + 2194871.

It is an arithmetic number, because the mean of its divisors is an integer number (16248960).

Almost surely, 2^1630513500 is an apocalyptic number.

1630513500 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 1630513500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3119800320).

1630513500 is an abundant number, since it is smaller than the sum of its proper divisors (4609087140).

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

1630513500 is a wasteful number, since it uses less digits than its factorization.

1630513500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 802 (or 790 counting only the distinct ones).

The product of its (nonzero) digits is 1350, while the sum is 24.

The square root of 1630513500 is about 40379.6173830313. The cubic root of 1630513500 is about 1176.9954925095.

Adding to 1630513500 its reverse (53150361), we get a palindrome (1683663861).

The spelling of 1630513500 in words is "one billion, six hundred thirty million, five hundred thirteen thousand, five hundred".