1630989635 has 64 divisors (see below), whose sum is σ = 2267854848. Its totient is φ = 1115520000.

The previous prime is 1630989631. The next prime is 1630989641. The reversal of 1630989635 is 5369890361.

It is not a de Polignac number, because 1630989635 - 2² = 1630989631 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1630989631) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9766322 + ... + 9766488.

It is an arithmetic number, because the mean of its divisors is an integer number (35435232).

Almost surely, 2^1630989635 is an apocalyptic number.

1630989635 is a deficient number, since it is larger than the sum of its proper divisors (636865213).

1630989635 is a wasteful number, since it uses less digits than its factorization.

1630989635 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356.

The product of its (nonzero) digits is 1049760, while the sum is 50.

The square root of 1630989635 is about 40385.5126871011. The cubic root of 1630989635 is about 1177.1100482836.

The spelling of 1630989635 in words is "one billion, six hundred thirty million, nine hundred eighty-nine thousand, six hundred thirty-five".