1630245680 has 60 divisors (see below), whose sum is σ = 4409159760. Its totient is φ = 558940032.

The previous prime is 1630245671. The next prime is 1630245703. The reversal of 1630245680 is 865420361.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 1630245680.

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 11 ways as a sum of consecutive naturals, for example, 204020 + ... + 211859.

It is an arithmetic number, because the mean of its divisors is an integer number (73485996).

Almost surely, 2^1630245680 is an apocalyptic number.

1630245680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1630245680 is an abundant number, since it is smaller than the sum of its proper divisors (2778914080).

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

1630245680 is a wasteful number, since it uses less digits than its factorization.

1630245680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415906 (or 415893 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 1630245680 is about 40376.3009697520. The cubic root of 1630245680 is about 1176.9310465148.

The spelling of 1630245680 in words is "one billion, six hundred thirty million, two hundred forty-five thousand, six hundred eighty".