1630541632 has 14 divisors (see below), whose sum is σ = 3235606178. Its totient is φ = 815270784.

The previous prime is 1630541623. The next prime is 1630541657. The reversal of 1630541632 is 2361450361.

It can be written as a sum of positive squares in only one way, i.e., 1218289216 + 412252416 = 34904^2 + 20304^2 .

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 1630541594 and 1630541603.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12738543 + ... + 12738670.

It is an arithmetic number, because the mean of its divisors is an integer number (231114727).

Almost surely, 2^1630541632 is an apocalyptic number.

It is an amenable number.

1630541632 is a deficient number, since it is larger than the sum of its proper divisors (1605064546).

1630541632 is an equidigital number, since it uses as much as digits as its factorization.

1630541632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25477225 (or 25477215 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 1630541632 is about 40379.9657255922. The cubic root of 1630541632 is about 1177.0022615523.

Adding to 1630541632 its reverse (2361450361), we get a palindrome (3991991993).

The spelling of 1630541632 in words is "one billion, six hundred thirty million, five hundred forty-one thousand, six hundred thirty-two".