1634630642 has 8 divisors (see below), whose sum is σ = 2453735916. Its totient is φ = 816718672.

The previous prime is 1634630639. The next prime is 1634630663. The reversal of 1634630642 is 2460364361.

It can be written as a sum of positive squares in 2 ways, for example, as 1615959601 + 18671041 = 40199^2 + 4321^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 294893 + ... + 300384.

Almost surely, 2^1634630642 is an apocalyptic number.

1634630642 is a deficient number, since it is larger than the sum of its proper divisors (819105274).

1634630642 is a wasteful number, since it uses less digits than its factorization.

1634630642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 596652.

The product of its (nonzero) digits is 62208, while the sum is 35.

The square root of 1634630642 is about 40430.5656898342. The cubic root of 1634630642 is about 1177.9853206826.

The spelling of 1634630642 in words is "one billion, six hundred thirty-four million, six hundred thirty thousand, six hundred forty-two".