196858901 has 4 divisors (see below), whose sum is σ = 197075904. Its totient is φ = 196641900.

The previous prime is 196858891. The next prime is 196858933. The reversal of 196858901 is 109858691.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 109858691 = 151 ⋅727541.

It is a cyclic number.

It is not a de Polignac number, because 196858901 - 2²⁶ = 129750037 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 (196858201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 107135 + ... + 108956.

It is an arithmetic number, because the mean of its divisors is an integer number (49268976).

Almost surely, 2^196858901 is an apocalyptic number.

It is an amenable number.

196858901 is a deficient number, since it is larger than the sum of its proper divisors (217003).

196858901 is an equidigital number, since it uses as much as digits as its factorization.

196858901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217002.

The product of its (nonzero) digits is 155520, while the sum is 47.

The square root of 196858901 is about 14030.6415035094. The cubic root of 196858901 is about 581.7258355677.

The spelling of 196858901 in words is "one hundred ninety-six million, eight hundred fifty-eight thousand, nine hundred one".