11638154898 has 32 divisors (see below), whose sum is σ = 25872654720. Its totient is φ = 3877871760.

The previous prime is 11638154863. The next prime is 11638154903. The reversal of 11638154898 is 89845183611.

It is a happy number.

11638154898 is a `hidden beast` number, since 1 + 1 + 6 + 3 + 8 + 1 + 548 + 98 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 102228 + ... + 183648.

It is an arithmetic number, because the mean of its divisors is an integer number (808520460).

Almost surely, 2^11638154898 is an apocalyptic number.

11638154898 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

11638154898 is an abundant number, since it is smaller than the sum of its proper divisors (14234499822).

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

11638154898 is a wasteful number, since it uses less digits than its factorization.

11638154898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84079 (or 84073 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 54.

The spelling of 11638154898 in words is "eleven billion, six hundred thirty-eight million, one hundred fifty-four thousand, eight hundred ninety-eight".