196402649 has 8 divisors (see below), whose sum is σ = 208486728. Its totient is φ = 184377600.

The previous prime is 196402637. The next prime is 196402729. The reversal of 196402649 is 946204691.

It can be written as a sum of positive squares in 4 ways, for example, as 15015625 + 181387024 = 3875^2 + 13468^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-196402649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (196401649) 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, 7802 + ... + 21299.

It is an arithmetic number, because the mean of its divisors is an integer number (26060841).

Almost surely, 2^196402649 is an apocalyptic number.

It is an amenable number.

196402649 is a deficient number, since it is larger than the sum of its proper divisors (12084079).

196402649 is a wasteful number, since it uses less digits than its factorization.

196402649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29515.

The product of its (nonzero) digits is 93312, while the sum is 41.

The square root of 196402649 is about 14014.3729435177. The cubic root of 196402649 is about 581.2760736907.

The spelling of 196402649 in words is "one hundred ninety-six million, four hundred two thousand, six hundred forty-nine".