1630440120 has 32 divisors (see below), whose sum is σ = 4891320720. Its totient is φ = 434784000.

The previous prime is 1630440107. The next prime is 1630440127. The reversal of 1630440120 is 210440361.

It is a super-2 number, since 2×1630440120² = 5316669969811228800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1630440127) 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, 6793381 + ... + 6793620.

Almost surely, 2^1630440120 is an apocalyptic number.

1630440120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1630440120 is an abundant number, since it is smaller than the sum of its proper divisors (3260880600).

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

1630440120 is a wasteful number, since it uses less digits than its factorization.

1630440120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13587015 (or 13587011 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 1630440120 is about 40378.7087460706. The cubic root of 1630440120 is about 1176.9778356538.

Adding to 1630440120 its reverse (210440361), we get a palindrome (1840880481).

The spelling of 1630440120 in words is "one billion, six hundred thirty million, four hundred forty thousand, one hundred twenty".