196091957 has 16 divisors (see below), whose sum is σ = 215027712. Its totient is φ = 178018560.

The previous prime is 196091953. The next prime is 196091963. The reversal of 196091957 is 759190691.

It is not a de Polignac number, because 196091957 - 2² = 196091953 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (196091953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 319583 + ... + 320195.

It is an arithmetic number, because the mean of its divisors is an integer number (13439232).

Almost surely, 2^196091957 is an apocalyptic number.

196091957 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

196091957 is a deficient number, since it is larger than the sum of its proper divisors (18935755).

196091957 is a wasteful number, since it uses less digits than its factorization.

196091957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1268.

The product of its (nonzero) digits is 153090, while the sum is 47.

The square root of 196091957 is about 14003.2837934536. The cubic root of 196091957 is about 580.9694024371.

The spelling of 196091957 in words is "one hundred ninety-six million, ninety-one thousand, nine hundred fifty-seven".