196934991 has 16 divisors (see below), whose sum is σ = 288283008. Its totient is φ = 118591200.

The previous prime is 196934989. The next prime is 196934999. The reversal of 196934991 is 199439691.

It is not a de Polignac number, because 196934991 - 2¹ = 196934989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (196934999) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13825 + ... + 24186.

It is an arithmetic number, because the mean of its divisors is an integer number (18017688).

Almost surely, 2^196934991 is an apocalyptic number.

196934991 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

196934991 is a deficient number, since it is larger than the sum of its proper divisors (91348017).

196934991 is a wasteful number, since it uses less digits than its factorization.

196934991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38182.

The product of its digits is 472392, while the sum is 51.

The square root of 196934991 is about 14033.3528067957. The cubic root of 196934991 is about 581.8007755661.

The spelling of 196934991 in words is "one hundred ninety-six million, nine hundred thirty-four thousand, nine hundred ninety-one".