1630104520 has 64 divisors (see below), whose sum is σ = 4021488000. Its totient is φ = 589754880.

The previous prime is 1630104499. The next prime is 1630104521. The reversal of 1630104520 is 254010361.

It is a super-2 number, since 2×1630104520² = 5314481492248860800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 1630104491 and 1630104500.

It is not an unprimeable number, because it can be changed into a prime (1630104521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78252 + ... + 96868.

It is an arithmetic number, because the mean of its divisors is an integer number (62835750).

Almost surely, 2^1630104520 is an apocalyptic number.

1630104520 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 1630104520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2010744000).

1630104520 is an abundant number, since it is smaller than the sum of its proper divisors (2391383480).

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

1630104520 is a wasteful number, since it uses less digits than its factorization.

1630104520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18838 (or 18834 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 1630104520 is about 40374.5528767812. The cubic root of 1630104520 is about 1176.8970760967.

Adding to 1630104520 its reverse (254010361), we get a palindrome (1884114881).

The spelling of 1630104520 in words is "one billion, six hundred thirty million, one hundred four thousand, five hundred twenty".