1630680480 has 288 divisors, whose sum is σ = 6538371840. Its totient is φ = 364861440.

The previous prime is 1630680479. The next prime is 1630680481. The reversal of 1630680480 is 840860361.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1630680479) and next prime (1630680481).

It is a tau number, because it is divible by the number of its divisors (288).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (1630680481) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 201961 + ... + 209879.

It is an arithmetic number, because the mean of its divisors is an integer number (22702680).

Almost surely, 2^1630680480 is an apocalyptic number.

1630680480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1630680480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3269185920).

1630680480 is an abundant number, since it is smaller than the sum of its proper divisors (4907691360).

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

1630680480 is a wasteful number, since it uses less digits than its factorization.

1630680480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7964 (or 7953 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 1630680480 is about 40381.6849574160. The cubic root of 1630680480 is about 1177.0356696273.

The spelling of 1630680480 in words is "one billion, six hundred thirty million, six hundred eighty thousand, four hundred eighty".