196187645 has 8 divisors (see below), whose sum is σ = 235644120. Its totient is φ = 156804160.

The previous prime is 196187627. The next prime is 196187647. The reversal of 196187645 is 546781691.

It can be written as a sum of positive squares in 4 ways, for example, as 8031556 + 188156089 = 2834^2 + 13717^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 196187645 - 2¹⁰ = 196186621 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 196187645.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (196187647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12146 + ... + 23235.

It is an arithmetic number, because the mean of its divisors is an integer number (29455515).

Almost surely, 2^196187645 is an apocalyptic number.

It is an amenable number.

196187645 is a deficient number, since it is larger than the sum of its proper divisors (39456475).

196187645 is a wasteful number, since it uses less digits than its factorization.

196187645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36495.

The product of its digits is 362880, while the sum is 47.

The square root of 196187645 is about 14006.7000039267. The cubic root of 196187645 is about 581.0638866118.

The spelling of 196187645 in words is "one hundred ninety-six million, one hundred eighty-seven thousand, six hundred forty-five".