1194638836 has 12 divisors (see below), whose sum is σ = 2105659360. Its totient is φ = 593021880.

The previous prime is 1194638821. The next prime is 1194638867. The reversal of 1194638836 is 6388364911.

It is a self number, because there is not a number n which added to its sum of digits gives 1194638836.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1073760 + ... + 1074871.

Almost surely, 2^1194638836 is an apocalyptic number.

It is an amenable number.

1194638836 is a deficient number, since it is larger than the sum of its proper divisors (911020524).

1194638836 is a wasteful number, since it uses less digits than its factorization.

1194638836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2148774 (or 2148772 counting only the distinct ones).

The product of its digits is 746496, while the sum is 49.

The square root of 1194638836 is about 34563.5477924359. The cubic root of 1194638836 is about 1061.0736824722.

The spelling of 1194638836 in words is "one billion, one hundred ninety-four million, six hundred thirty-eight thousand, eight hundred thirty-six".