196158539 has 4 divisors (see below), whose sum is σ = 199483320. Its totient is φ = 192833760.

The previous prime is 196158511. The next prime is 196158553. The reversal of 196158539 is 935851691.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 196158539 - 2¹⁶ = 196093003 is a prime.

It is a super-2 number, since 2×196158539² = 76956344845229042, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 196158493 and 196158502.

It is not an unprimeable number, because it can be changed into a prime (196158239) 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 3 ways as a sum of consecutive naturals, for example, 1662302 + ... + 1662419.

It is an arithmetic number, because the mean of its divisors is an integer number (49870830).

Almost surely, 2^196158539 is an apocalyptic number.

196158539 is a deficient number, since it is larger than the sum of its proper divisors (3324781).

196158539 is an equidigital number, since it uses as much as digits as its factorization.

196158539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3324780.

The product of its digits is 291600, while the sum is 47.

The square root of 196158539 is about 14005.6609626251. The cubic root of 196158539 is about 581.0351500385.

The spelling of 196158539 in words is "one hundred ninety-six million, one hundred fifty-eight thousand, five hundred thirty-nine".