1630989360 has 960 divisors, whose sum is σ = 7695507456. Its totient is φ = 298598400.

The previous prime is 1630989343. The next prime is 1630989379. The reversal of 1630989360 is 639890361.

1630989360 is a `hidden beast` number, since 1 + 630 + 9 + 8 + 9 + 3 + 6 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 22342284 + ... + 22342356.

Almost surely, 2^1630989360 is an apocalyptic number.

1630989360 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 1630989360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3847753728).

1630989360 is an abundant number, since it is smaller than the sum of its proper divisors (6064518096).

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

1630989360 is a wasteful number, since it uses less digits than its factorization.

1630989360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154 (or 145 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 45.

The square root of 1630989360 is about 40385.5092824147. The cubic root of 1630989360 is about 1177.1099821264.

The spelling of 1630989360 in words is "one billion, six hundred thirty million, nine hundred eighty-nine thousand, three hundred sixty".