1634630406 has 16 divisors (see below), whose sum is σ = 3270771264. Its totient is φ = 544625064.

The previous prime is 1634630383. The next prime is 1634630407. The reversal of 1634630406 is 6040364361.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1634630407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48616 + ... + 75051.

It is an arithmetic number, because the mean of its divisors is an integer number (204423204).

Almost surely, 2^1634630406 is an apocalyptic number.

1634630406 is an abundant number, since it is smaller than the sum of its proper divisors (1636140858).

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

1634630406 is a wasteful number, since it uses less digits than its factorization.

1634630406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125875.

The product of its (nonzero) digits is 31104, while the sum is 33.

The square root of 1634630406 is about 40430.5627712502. The cubic root of 1634630406 is about 1177.9852639920.

Adding to 1634630406 its reverse (6040364361), we get a palindrome (7674994767).

The spelling of 1634630406 in words is "one billion, six hundred thirty-four million, six hundred thirty thousand, four hundred six".