1613225028 has 12 divisors (see below), whose sum is σ = 3764191760. Its totient is φ = 537741672.

The previous prime is 1613224997. The next prime is 1613225051. The reversal of 1613225028 is 8205223161.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 1613224986 and 1613225004.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67217698 + ... + 67217721.

Almost surely, 2^1613225028 is an apocalyptic number.

It is an amenable number.

1613225028 is an abundant number, since it is smaller than the sum of its proper divisors (2150966732).

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

1613225028 is a wasteful number, since it uses less digits than its factorization.

1613225028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134435426 (or 134435424 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 1613225028 is about 40164.9726503081. The cubic root of 1613225028 is about 1172.8207751442.

Adding to 1613225028 its reverse (8205223161), we get a palindrome (9818448189).

The spelling of 1613225028 in words is "one billion, six hundred thirteen million, two hundred twenty-five thousand, twenty-eight".