198373816 has 16 divisors (see below), whose sum is σ = 393830640. Its totient is φ = 93352320.

The previous prime is 198373811. The next prime is 198373823. The reversal of 198373816 is 618373891.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198373811) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 729180 + ... + 729451.

It is an arithmetic number, because the mean of its divisors is an integer number (24614415).

Almost surely, 2^198373816 is an apocalyptic number.

It is an amenable number.

198373816 is a deficient number, since it is larger than the sum of its proper divisors (195456824).

198373816 is a wasteful number, since it uses less digits than its factorization.

198373816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1458654 (or 1458650 counting only the distinct ones).

The product of its digits is 217728, while the sum is 46.

The square root of 198373816 is about 14084.5239891166. The cubic root of 198373816 is about 583.2142353501.

It can be divided in two parts, 19837 and 3816, that added together give a triangular number (23653 = T₂₁₇).

The spelling of 198373816 in words is "one hundred ninety-eight million, three hundred seventy-three thousand, eight hundred sixteen".