196918093 has 4 divisors (see below), whose sum is σ = 197938588. Its totient is φ = 195897600.

The previous prime is 196918061. The next prime is 196918129. The reversal of 196918093 is 390819691.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 390819691 = 467 ⋅836873.

It can be written as a sum of positive squares in 2 ways, for example, as 114961284 + 81956809 = 10722^2 + 9053^2 .

It is a cyclic number.

It is not a de Polignac number, because 196918093 - 2⁵ = 196918061 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 (196918193) 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, 509958 + ... + 510343.

It is an arithmetic number, because the mean of its divisors is an integer number (49484647).

Almost surely, 2^196918093 is an apocalyptic number.

It is an amenable number.

196918093 is a deficient number, since it is larger than the sum of its proper divisors (1020495).

196918093 is a wasteful number, since it uses less digits than its factorization.

196918093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1020494.

The product of its (nonzero) digits is 104976, while the sum is 46.

The square root of 196918093 is about 14032.7507282072. The cubic root of 196918093 is about 581.7841346250.

The spelling of 196918093 in words is "one hundred ninety-six million, nine hundred eighteen thousand, ninety-three".