1630543426 has 8 divisors (see below), whose sum is σ = 2468254140. Its totient is φ = 807792048.

The previous prime is 1630543381. The next prime is 1630543427. The reversal of 1630543426 is 6243450361.

It can be written as a sum of positive squares in 2 ways, for example, as 1619660025 + 10883401 = 40245^2 + 3299^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 1630543391 and 1630543400.

It is not an unprimeable number, because it can be changed into a prime (1630543427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3739561 + ... + 3739996.

Almost surely, 2^1630543426 is an apocalyptic number.

1630543426 is a deficient number, since it is larger than the sum of its proper divisors (837710714).

1630543426 is a wasteful number, since it uses less digits than its factorization.

1630543426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7479668.

The product of its (nonzero) digits is 51840, while the sum is 34.

The square root of 1630543426 is about 40379.9879395722. The cubic root of 1630543426 is about 1177.0026932169.

Adding to 1630543426 its reverse (6243450361), we get a palindrome (7873993787).

The spelling of 1630543426 in words is "one billion, six hundred thirty million, five hundred forty-three thousand, four hundred twenty-six".