921746042198 has 8 divisors (see below), whose sum is σ = 1386470370960. Its totient is φ = 459589251880.

The previous prime is 921746042183. The next prime is 921746042209. The reversal of 921746042198 is 891240647129.

It is a sphenic number, since it is the product of 3 distinct primes.

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, 641883713 + ... + 641885148.

It is an arithmetic number, because the mean of its divisors is an integer number (173308796370).

Almost surely, 2^921746042198 is an apocalyptic number.

921746042198 is a deficient number, since it is larger than the sum of its proper divisors (464724328762).

921746042198 is a wasteful number, since it uses less digits than its factorization.

921746042198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1283769222.

The product of its (nonzero) digits is 1741824, while the sum is 53.

The spelling of 921746042198 in words is "nine hundred twenty-one billion, seven hundred forty-six million, forty-two thousand, one hundred ninety-eight".