1630340352 has 72 divisors (see below), whose sum is σ = 4821223680. Its totient is φ = 543444480.

The previous prime is 1630340321. The next prime is 1630340407. The reversal of 1630340352 is 2530430361.

It is a happy number.

1630340352 is a `hidden beast` number, since 1 + 6 + 303 + 4 + 0 + 352 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111024 + ... + 124847.

It is an arithmetic number, because the mean of its divisors is an integer number (66961440).

Almost surely, 2^1630340352 is an apocalyptic number.

1630340352 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1630340352 is an abundant number, since it is smaller than the sum of its proper divisors (3190883328).

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

1630340352 is an equidigital number, since it uses as much as digits as its factorization.

1630340352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235896 (or 235876 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 27.

The square root of 1630340352 is about 40377.4733236244. The cubic root of 1630340352 is about 1176.9538284101.

Subtracting 1630340352 from its reverse (2530430361), we obtain a palindrome (900090009).

The spelling of 1630340352 in words is "one billion, six hundred thirty million, three hundred forty thousand, three hundred fifty-two".