196442623 has 4 divisors (see below), whose sum is σ = 211553608. Its totient is φ = 181331640.

The previous prime is 196442611. The next prime is 196442641. The reversal of 196442623 is 326244691.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 326244691 = 193 ⋅1690387.

It is a cyclic number.

It is not a de Polignac number, because 196442623 - 2¹⁷ = 196311551 is a prime.

It is a super-2 number, since 2×196442623² = 77179408262240258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (196442663) 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, 7555473 + ... + 7555498.

It is an arithmetic number, because the mean of its divisors is an integer number (52888402).

Almost surely, 2^196442623 is an apocalyptic number.

196442623 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

196442623 is a deficient number, since it is larger than the sum of its proper divisors (15110985).

196442623 is a wasteful number, since it uses less digits than its factorization.

196442623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15110984.

The product of its digits is 62208, while the sum is 37.

The square root of 196442623 is about 14015.7990496439. The cubic root of 196442623 is about 581.3155068885.

The spelling of 196442623 in words is "one hundred ninety-six million, four hundred forty-two thousand, six hundred twenty-three".