203848649 has 4 divisors (see below), whose sum is σ = 215839764. Its totient is φ = 191857536.

The previous prime is 203848633. The next prime is 203848657. The reversal of 203848649 is 946848302.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 946848302 = 2 ⋅473424151.

It can be written as a sum of positive squares in 2 ways, for example, as 97614400 + 106234249 = 9880^2 + 10307^2 .

It is a cyclic number.

It is not a de Polignac number, because 203848649 - 2⁴ = 203848633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (203848669) 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, 5995532 + ... + 5995565.

It is an arithmetic number, because the mean of its divisors is an integer number (53959941).

Almost surely, 2^203848649 is an apocalyptic number.

It is an amenable number.

203848649 is a deficient number, since it is larger than the sum of its proper divisors (11991115).

203848649 is a wasteful number, since it uses less digits than its factorization.

203848649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11991114.

The product of its (nonzero) digits is 331776, while the sum is 44.

The square root of 203848649 is about 14277.5575292135. The cubic root of 203848649 is about 588.5309126933.

The spelling of 203848649 in words is "two hundred three million, eight hundred forty-eight thousand, six hundred forty-nine".