196149787 has 4 divisors (see below), whose sum is σ = 206473480. Its totient is φ = 185826096.

The previous prime is 196149769. The next prime is 196149827. The reversal of 196149787 is 787941691.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 196149787 - 2¹¹ = 196147739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (196140787) 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, 5161818 + ... + 5161855.

It is an arithmetic number, because the mean of its divisors is an integer number (51618370).

Almost surely, 2^196149787 is an apocalyptic number.

196149787 is a deficient number, since it is larger than the sum of its proper divisors (10323693).

196149787 is a wasteful number, since it uses less digits than its factorization.

196149787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10323692.

The product of its digits is 762048, while the sum is 52.

The square root of 196149787 is about 14005.3485140499. The cubic root of 196149787 is about 581.0265085670.

The spelling of 196149787 in words is "one hundred ninety-six million, one hundred forty-nine thousand, seven hundred eighty-seven".