1630625320 has 32 divisors (see below), whose sum is σ = 3673123200. Its totient is φ = 651500608.

The previous prime is 1630625291. The next prime is 1630625351. The reversal of 1630625320 is 235260361.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12501 + ... + 58459.

It is an arithmetic number, because the mean of its divisors is an integer number (114785100).

Almost surely, 2^1630625320 is an apocalyptic number.

1630625320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1630625320 is an abundant number, since it is smaller than the sum of its proper divisors (2042497880).

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

1630625320 is a wasteful number, since it uses less digits than its factorization.

1630625320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46857 (or 46853 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 1630625320 is about 40381.0019687476. The cubic root of 1630625320 is about 1177.0223978633.

Adding to 1630625320 its reverse (235260361), we get a palindrome (1865885681).

The spelling of 1630625320 in words is "one billion, six hundred thirty million, six hundred twenty-five thousand, three hundred twenty".