1213694868 has 24 divisors (see below), whose sum is σ = 2908495072. Its totient is φ = 393630624.

The previous prime is 1213694827. The next prime is 1213694893. The reversal of 1213694868 is 8684963121.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

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, 1366330 + ... + 1367217.

Almost surely, 2^1213694868 is an apocalyptic number.

It is an amenable number.

1213694868 is an abundant number, since it is smaller than the sum of its proper divisors (1694800204).

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

1213694868 is a wasteful number, since it uses less digits than its factorization.

1213694868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2733591 (or 2733589 counting only the distinct ones).

The product of its digits is 497664, while the sum is 48.

The square root of 1213694868 is about 34838.1237726718. The cubic root of 1213694868 is about 1066.6857791280.

The spelling of 1213694868 in words is "one billion, two hundred thirteen million, six hundred ninety-four thousand, eight hundred sixty-eight".