1213602613 has 12 divisors (see below), whose sum is σ = 1345249440. Its totient is φ = 1092546752.

The previous prime is 1213602587. The next prime is 1213602623. The reversal of 1213602613 is 3162063121.

It is not a de Polignac number, because 1213602613 - 2⁹ = 1213602101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213602623) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 84643 + ... + 97936.

It is an arithmetic number, because the mean of its divisors is an integer number (112104120).

Almost surely, 2^1213602613 is an apocalyptic number.

It is an amenable number.

1213602613 is a deficient number, since it is larger than the sum of its proper divisors (131646827).

1213602613 is a wasteful number, since it uses less digits than its factorization.

1213602613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182636 (or 182619 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 1213602613 is about 34836.7996951500. The cubic root of 1213602613 is about 1066.6587515797.

Adding to 1213602613 its reverse (3162063121), we get a palindrome (4375665734).

The spelling of 1213602613 in words is "one billion, two hundred thirteen million, six hundred two thousand, six hundred thirteen".