1964197 has 8 divisors (see below), whose sum is σ = 2128896. Its totient is φ = 1804992.

The previous prime is 1964189. The next prime is 1964203. The reversal of 1964197 is 7914691.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1964197 - 2³ = 1964189 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 (1964117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 613 + ... + 2074.

It is an arithmetic number, because the mean of its divisors is an integer number (266112).

2^1964197 is an apocalyptic number.

1964197 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1964197 is a deficient number, since it is larger than the sum of its proper divisors (164699).

1964197 is a wasteful number, since it uses less digits than its factorization.

1964197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2747.

The product of its digits is 13608, while the sum is 37.

The square root of 1964197 is about 1401.4981270055. The cubic root of 1964197 is about 125.2357577334.

The spelling of 1964197 in words is "one million, nine hundred sixty-four thousand, one hundred ninety-seven".