196897539 has 8 divisors (see below), whose sum is σ = 268933392. Its totient is φ = 128063360.

The previous prime is 196897529. The next prime is 196897541. The reversal of 196897539 is 935798691.

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

It is a cyclic number.

It is not a de Polignac number, because 196897539 - 2¹³ = 196889347 is a prime.

It is not an unprimeable number, because it can be changed into a prime (196897529) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 800274 + ... + 800519.

It is an arithmetic number, because the mean of its divisors is an integer number (33616674).

Almost surely, 2^196897539 is an apocalyptic number.

196897539 is a deficient number, since it is larger than the sum of its proper divisors (72035853).

196897539 is a wasteful number, since it uses less digits than its factorization.

196897539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1600837.

The product of its digits is 3674160, while the sum is 57.

The square root of 196897539 is about 14032.0183509002. The cubic root of 196897539 is about 581.7638920172.

The spelling of 196897539 in words is "one hundred ninety-six million, eight hundred ninety-seven thousand, five hundred thirty-nine".