196671905 has 16 divisors (see below), whose sum is σ = 244684800. Its totient is φ = 151596480.

The previous prime is 196671901. The next prime is 196671911. The reversal of 196671905 is 509176691.

It is a happy number.

It is not a de Polignac number, because 196671905 - 2² = 196671901 is a prime.

It is not an unprimeable number, because it can be changed into a prime (196671901) 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, 34391 + ... + 39699.

It is an arithmetic number, because the mean of its divisors is an integer number (15292800).

Almost surely, 2^196671905 is an apocalyptic number.

It is an amenable number.

196671905 is a deficient number, since it is larger than the sum of its proper divisors (48012895).

196671905 is a wasteful number, since it uses less digits than its factorization.

196671905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5584.

The product of its (nonzero) digits is 102060, while the sum is 44.

The square root of 196671905 is about 14023.9760767052. The cubic root of 196671905 is about 581.5415836908.

The spelling of 196671905 in words is "one hundred ninety-six million, six hundred seventy-one thousand, nine hundred five".