1630344436 has 24 divisors (see below), whose sum is σ = 3365874176. Its totient is φ = 676179360.

The previous prime is 1630344427. The next prime is 1630344437. The reversal of 1630344436 is 6344430361.

1630344436 is nontrivially palindromic in base 6.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1630344437) 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, 938271 + ... + 940006.

Almost surely, 2^1630344436 is an apocalyptic number.

It is an amenable number.

1630344436 is an abundant number, since it is smaller than the sum of its proper divisors (1735529740).

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

1630344436 is a wasteful number, since it uses less digits than its factorization.

1630344436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1878319 (or 1878317 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 34.

The square root of 1630344436 is about 40377.5238963461. The cubic root of 1630344436 is about 1176.9548111651.

Adding to 1630344436 its reverse (6344430361), we get a palindrome (7974774797).

The spelling of 1630344436 in words is "one billion, six hundred thirty million, three hundred forty-four thousand, four hundred thirty-six".