998740190 has 64 divisors (see below), whose sum is σ = 2120007168. Its totient is φ = 331689600.

The previous prime is 998740189. The next prime is 998740213. The reversal of 998740190 is 91047899.

It is a super-2 number, since 2×998740190² = 1994963934242472200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 284345 + ... + 287835.

It is an arithmetic number, because the mean of its divisors is an integer number (33125112).

Almost surely, 2^998740190 is an apocalyptic number.

998740190 is an abundant number, since it is smaller than the sum of its proper divisors (1121266978).

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

998740190 is a wasteful number, since it uses less digits than its factorization.

998740190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3633.

The product of its (nonzero) digits is 163296, while the sum is 47.

The square root of 998740190 is about 31602.8509789861. The cubic root of 998740190 is about 999.5798868630.

The spelling of 998740190 in words is "nine hundred ninety-eight million, seven hundred forty thousand, one hundred ninety".