1957197 has 16 divisors (see below), whose sum is σ = 2875392. Its totient is φ = 1174320.

The previous prime is 1957187. The next prime is 1957243. The reversal of 1957197 is 7917591.

It is not a de Polignac number, because 1957197 - 2⁷ = 1957069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1957117) 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, 3958 + ... + 4424.

It is an arithmetic number, because the mean of its divisors is an integer number (179712).

2^1957197 is an apocalyptic number.

It is an amenable number.

1957197 is a deficient number, since it is larger than the sum of its proper divisors (918195).

1957197 is a wasteful number, since it uses less digits than its factorization.

1957197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 608.

The product of its digits is 19845, while the sum is 39.

The square root of 1957197 is about 1398.9985704067. The cubic root of 1957197 is about 125.0868090329.

The spelling of 1957197 in words is "one million, nine hundred fifty-seven thousand, one hundred ninety-seven".