1630240655 has 24 divisors (see below), whose sum is σ = 2034126432. Its totient is φ = 1254221696.

The previous prime is 1630240643. The next prime is 1630240663. The reversal of 1630240655 is 5560420361.

It is not a de Polignac number, because 1630240655 - 2⁸ = 1630240399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1332374 + ... + 1333596.

It is an arithmetic number, because the mean of its divisors is an integer number (84755268).

Almost surely, 2^1630240655 is an apocalyptic number.

1630240655 is a deficient number, since it is larger than the sum of its proper divisors (403885777).

1630240655 is a wasteful number, since it uses less digits than its factorization.

1630240655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1603 (or 1574 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 32.

The square root of 1630240655 is about 40376.2387426070. The cubic root of 1630240655 is about 1176.9298372728.

The spelling of 1630240655 in words is "one billion, six hundred thirty million, two hundred forty thousand, six hundred fifty-five".