196091918 has 16 divisors (see below), whose sum is σ = 325399680. Its totient is φ = 87876600.

The previous prime is 196091893. The next prime is 196091927. The reversal of 196091918 is 819190691.

It is a super-4 number, since 4×196091918⁴ (a number of 34 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61208 + ... + 64331.

It is an arithmetic number, because the mean of its divisors is an integer number (20337480).

Almost surely, 2^196091918 is an apocalyptic number.

196091918 is a deficient number, since it is larger than the sum of its proper divisors (129307762).

196091918 is a wasteful number, since it uses less digits than its factorization.

196091918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125623.

The product of its (nonzero) digits is 34992, while the sum is 44.

The square root of 196091918 is about 14003.2824009230. The cubic root of 196091918 is about 580.9693639215.

The spelling of 196091918 in words is "one hundred ninety-six million, ninety-one thousand, nine hundred eighteen".