196918090 has 16 divisors (see below), whose sum is σ = 373108320. Its totient is φ = 74621520.

The previous prime is 196918061. The next prime is 196918129. The reversal of 196918090 is 90819691.

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 7 ways as a sum of consecutive naturals, for example, 518016 + ... + 518395.

It is an arithmetic number, because the mean of its divisors is an integer number (23319270).

Almost surely, 2^196918090 is an apocalyptic number.

196918090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

196918090 is a deficient number, since it is larger than the sum of its proper divisors (176190230).

196918090 is a wasteful number, since it uses less digits than its factorization.

196918090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1036437.

The product of its (nonzero) digits is 34992, while the sum is 43.

The square root of 196918090 is about 14032.7506213144. The cubic root of 196918090 is about 581.7841316706.

The spelling of 196918090 in words is "one hundred ninety-six million, nine hundred eighteen thousand, ninety".