1613125318 has 16 divisors (see below), whose sum is σ = 2766011904. Its totient is φ = 691175880.

The previous prime is 1613125303. The next prime is 1613125321. The reversal of 1613125318 is 8135213161.

It is a super-2 number, since 2×1613125318² = 5204346583145202248, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1613125318.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 62221 + ... + 84247.

It is an arithmetic number, because the mean of its divisors is an integer number (172875744).

Almost surely, 2^1613125318 is an apocalyptic number.

1613125318 is a deficient number, since it is larger than the sum of its proper divisors (1152886586).

1613125318 is a wasteful number, since it uses less digits than its factorization.

1613125318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27267.

The product of its digits is 4320, while the sum is 31.

The square root of 1613125318 is about 40163.7313754586. The cubic root of 1613125318 is about 1172.7966114623.

Adding to 1613125318 its reverse (8135213161), we get a palindrome (9748338479).

The spelling of 1613125318 in words is "one billion, six hundred thirteen million, one hundred twenty-five thousand, three hundred eighteen".