1613630220 has 24 divisors (see below), whose sum is σ = 4518164784. Its totient is φ = 430301376.

The previous prime is 1613630219. The next prime is 1613630287. The reversal of 1613630220 is 220363161.

It is a happy number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 13446859 + ... + 13446978.

It is an arithmetic number, because the mean of its divisors is an integer number (188256866).

Almost surely, 2^1613630220 is an apocalyptic number.

1613630220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1613630220 is an abundant number, since it is smaller than the sum of its proper divisors (2904534564).

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

1613630220 is a wasteful number, since it uses less digits than its factorization.

1613630220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26893849 (or 26893847 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 1613630220 is about 40170.0164301684. The cubic root of 1613630220 is about 1172.9189589698.

Adding to 1613630220 its reverse (220363161), we get a palindrome (1833993381).

The spelling of 1613630220 in words is "one billion, six hundred thirteen million, six hundred thirty thousand, two hundred twenty".