18296661838 has 192 divisors, whose sum is σ = 38426572800. Its totient is φ = 6446926080.

The previous prime is 18296661833. The next prime is 18296661841. The reversal of 18296661838 is 83816669281.

Its product of digits (5971968) is a multiple of the sum of its prime divisors (768).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18296661833) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 27763953 + ... + 27764611.

It is an arithmetic number, because the mean of its divisors is an integer number (200138400).

Almost surely, 2^18296661838 is an apocalyptic number.

18296661838 is an abundant number, since it is smaller than the sum of its proper divisors (20129910962).

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

18296661838 is a wasteful number, since it uses less digits than its factorization.

18296661838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 775 (or 768 counting only the distinct ones).

The product of its digits is 5971968, while the sum is 58.

The spelling of 18296661838 in words is "eighteen billion, two hundred ninety-six million, six hundred sixty-one thousand, eight hundred thirty-eight".