1630340406 has 32 divisors (see below), whose sum is σ = 3739852800. Its totient is φ = 525915720.

The previous prime is 1630340321. The next prime is 1630340407. The reversal of 1630340406 is 6040430361.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 1630340406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1630340407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 485286 + ... + 488633.

It is an arithmetic number, because the mean of its divisors is an integer number (116870400).

Almost surely, 2^1630340406 is an apocalyptic number.

1630340406 is an abundant number, since it is smaller than the sum of its proper divisors (2109512394).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1630340406 is a wasteful number, since it uses less digits than its factorization.

1630340406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 973961 (or 973955 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 1630340406 is about 40377.4739923141. The cubic root of 1630340406 is about 1176.9538414044.

Adding to 1630340406 its reverse (6040430361), we get a palindrome (7670770767).

The spelling of 1630340406 in words is "one billion, six hundred thirty million, three hundred forty thousand, four hundred six".