1630722634 has 8 divisors (see below), whose sum is σ = 2448856800. Its totient is φ = 814437036.

The previous prime is 1630722619. The next prime is 1630722641. The reversal of 1630722634 is 4362270361.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1630722634.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 459934 + ... + 463465.

It is an arithmetic number, because the mean of its divisors is an integer number (306107100).

Almost surely, 2^1630722634 is an apocalyptic number.

1630722634 is a deficient number, since it is larger than the sum of its proper divisors (818134166).

1630722634 is an equidigital number, since it uses as much as digits as its factorization.

1630722634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 924284.

The product of its (nonzero) digits is 36288, while the sum is 34.

The square root of 1630722634 is about 40382.2068985834. The cubic root of 1630722634 is about 1177.0458118828.

Adding to 1630722634 its reverse (4362270361), we get a palindrome (5992992995).

The spelling of 1630722634 in words is "one billion, six hundred thirty million, seven hundred twenty-two thousand, six hundred thirty-four".