1213763013 has 24 divisors (see below), whose sum is σ = 1823760120. Its totient is φ = 776926080.

The previous prime is 1213763009. The next prime is 1213763041. The reversal of 1213763013 is 3103673121.

1213763013 is a `hidden beast` number, since 1 + 2 + 13 + 7 + 630 + 13 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 98069409 + 1115693604 = 9903^2 + 33402^2 .

It is not a de Polignac number, because 1213763013 - 2² = 1213763009 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213763063) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 34395 + ... + 60087.

It is an arithmetic number, because the mean of its divisors is an integer number (75990005).

Almost surely, 2^1213763013 is an apocalyptic number.

It is an amenable number.

1213763013 is a deficient number, since it is larger than the sum of its proper divisors (609997107).

1213763013 is a wasteful number, since it uses less digits than its factorization.

1213763013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25909 (or 25906 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 27.

The square root of 1213763013 is about 34839.1017823365. The cubic root of 1213763013 is about 1066.7057423945.

The spelling of 1213763013 in words is "one billion, two hundred thirteen million, seven hundred sixty-three thousand, thirteen".