196445653 has 4 divisors (see below), whose sum is σ = 196475488. Its totient is φ = 196415820.

The previous prime is 196445609. The next prime is 196445723. The reversal of 196445653 is 356544691.

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.

It is a cyclic number.

It is not a de Polignac number, because 196445653 - 2¹⁷ = 196314581 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 (196445153) 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, 201 + ... + 19822.

It is an arithmetic number, because the mean of its divisors is an integer number (49118872).

Almost surely, 2^196445653 is an apocalyptic number.

It is an amenable number.

196445653 is a deficient number, since it is larger than the sum of its proper divisors (29835).

196445653 is an equidigital number, since it uses as much as digits as its factorization.

196445653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29834.

The product of its digits is 388800, while the sum is 43.

The square root of 196445653 is about 14015.9071415303. The cubic root of 196445653 is about 581.3184956780.

The spelling of 196445653 in words is "one hundred ninety-six million, four hundred forty-five thousand, six hundred fifty-three".