197383791 has 24 divisors (see below), whose sum is σ = 292983040. Its totient is φ = 118095120.

The previous prime is 197383783. The next prime is 197383801.

197383791 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 197383791 - 2³ = 197383783 is a prime.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 197383791.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197383721) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25236 + ... + 32118.

Almost surely, 2^197383791 is an apocalyptic number.

197383791 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

197383791 is a deficient number, since it is larger than the sum of its proper divisors (95599249).

197383791 is a wasteful number, since it uses less digits than its factorization.

197383791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6987 (or 6976 counting only the distinct ones).

The product of its digits is 285768, while the sum is 48.

The square root of 197383791 is about 14049.3341835120. The cubic root of 197383791 is about 582.2424002969.

The spelling of 197383791 in words is "one hundred ninety-seven million, three hundred eighty-three thousand, seven hundred ninety-one".