11898402836 has 12 divisors (see below), whose sum is σ = 20874656628. Its totient is φ = 5934215232.

The previous prime is 11898402823. The next prime is 11898402847. The reversal of 11898402836 is 63820489811.

It can be written as a sum of positive squares in 2 ways, for example, as 5722014736 + 6176388100 = 75644^2 + 78590^2 .

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, 3744761 + ... + 3747936.

It is an arithmetic number, because the mean of its divisors is an integer number (1739554719).

Almost surely, 2^11898402836 is an apocalyptic number.

It is an amenable number.

11898402836 is a deficient number, since it is larger than the sum of its proper divisors (8976253792).

11898402836 is a wasteful number, since it uses less digits than its factorization.

11898402836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7493098 (or 7493096 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 50.

The spelling of 11898402836 in words is "eleven billion, eight hundred ninety-eight million, four hundred two thousand, eight hundred thirty-six".