1630340544 has 84 divisors (see below), whose sum is σ = 5017901064. Its totient is φ = 465808896.

The previous prime is 1630340521. The next prime is 1630340549. The reversal of 1630340544 is 4450430361.

It is a tau number, because it is divible by the number of its divisors (84).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1630340549) 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 11 ways as a sum of consecutive naturals, for example, 77239 + ... + 96054.

Almost surely, 2^1630340544 is an apocalyptic number.

1630340544 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1630340544 is an abundant number, since it is smaller than the sum of its proper divisors (3387560520).

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

1630340544 is a wasteful number, since it uses less digits than its factorization.

1630340544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173322 (or 173305 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 30.

The square root of 1630340544 is about 40377.4757011877. The cubic root of 1630340544 is about 1176.9538746121.

The spelling of 1630340544 in words is "one billion, six hundred thirty million, three hundred forty thousand, five hundred forty-four".