196640229 has 16 divisors (see below), whose sum is σ = 267681024. Its totient is φ = 128356800.

The previous prime is 196640189. The next prime is 196640231. The reversal of 196640229 is 922046691.

It is not a de Polignac number, because 196640229 - 2²⁰ = 195591653 is a prime.

It is a super-2 number, since 2×196640229² = 77334759322344882, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (196640299) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104164 + ... + 106034.

It is an arithmetic number, because the mean of its divisors is an integer number (16730064).

Almost surely, 2^196640229 is an apocalyptic number.

It is an amenable number.

196640229 is a deficient number, since it is larger than the sum of its proper divisors (71040795).

196640229 is a wasteful number, since it uses less digits than its factorization.

196640229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2588.

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 196640229 is about 14022.8466796154. The cubic root of 196640229 is about 581.5103609627.

It can be divided in two parts, 1966 and 40229, that added together give a triangular number (42195 = T₂₉₀).

The spelling of 196640229 in words is "one hundred ninety-six million, six hundred forty thousand, two hundred twenty-nine".