820198783948 has 12 divisors (see below), whose sum is σ = 1435614356232. Its totient is φ = 410023253600.

The previous prime is 820198783919. The next prime is 820198783967. The reversal of 820198783948 is 849387891028.

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, 19010353 + ... + 19053448.

It is an arithmetic number, because the mean of its divisors is an integer number (119634529686).

Almost surely, 2^820198783948 is an apocalyptic number.

It is an amenable number.

820198783948 is a deficient number, since it is larger than the sum of its proper divisors (615415572284).

820198783948 is a wasteful number, since it uses less digits than its factorization.

820198783948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38069192 (or 38069190 counting only the distinct ones).

The product of its (nonzero) digits is 55738368, while the sum is 67.

The spelling of 820198783948 in words is "eight hundred twenty billion, one hundred ninety-eight million, seven hundred eighty-three thousand, nine hundred forty-eight".