1813125416 has 8 divisors (see below), whose sum is σ = 3399610170. Its totient is φ = 906562704.

The previous prime is 1813125409. The next prime is 1813125449. The reversal of 1813125416 is 6145213181.

It can be written as a sum of positive squares in only one way, i.e., 1604322916 + 208802500 = 40054^2 + 14450^2 .

It is a tau number, because it is divible by the number of its divisors (8).

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 as a sum of consecutive naturals, namely, 113320331 + ... + 113320346.

Almost surely, 2^1813125416 is an apocalyptic number.

It is an amenable number.

1813125416 is a deficient number, since it is larger than the sum of its proper divisors (1586484754).

1813125416 is a wasteful number, since it uses less digits than its factorization.

1813125416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226640683 (or 226640679 counting only the distinct ones).

The product of its digits is 5760, while the sum is 32.

The square root of 1813125416 is about 42580.8104197184. The cubic root of 1813125416 is about 1219.3899610694.

Adding to 1813125416 its reverse (6145213181), we get a palindrome (7958338597).

The spelling of 1813125416 in words is "one billion, eight hundred thirteen million, one hundred twenty-five thousand, four hundred sixteen".