196158537 has 8 divisors (see below), whose sum is σ = 290605280. Its totient is φ = 130772340.

The previous prime is 196158511. The next prime is 196158553. The reversal of 196158537 is 735851691.

It is a happy number.

196158537 is a `hidden beast` number, since 1 + 9 + 61 + 58 + 537 = 666.

It is not a de Polignac number, because 196158537 - 2⁷ = 196158409 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 196158492 and 196158501.

It is not an unprimeable number, because it can be changed into a prime (196151537) 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, 3632539 + ... + 3632592.

It is an arithmetic number, because the mean of its divisors is an integer number (36325660).

Almost surely, 2^196158537 is an apocalyptic number.

It is an amenable number.

196158537 is a deficient number, since it is larger than the sum of its proper divisors (94446743).

196158537 is an equidigital number, since it uses as much as digits as its factorization.

196158537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7265140 (or 7265134 counting only the distinct ones).

The product of its digits is 226800, while the sum is 45.

The square root of 196158537 is about 14005.6608912254. The cubic root of 196158537 is about 581.0351480638.

The spelling of 196158537 in words is "one hundred ninety-six million, one hundred fifty-eight thousand, five hundred thirty-seven".