203149406647 has 8 divisors (see below), whose sum is σ = 226332801792. Its totient is φ = 180751889400.

The previous prime is 203149406609. The next prime is 203149406651. The reversal of 203149406647 is 746604941302.

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

It is a cyclic number.

It is not a de Polignac number, because 203149406647 - 2⁷ = 203149406519 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 203149406597 and 203149406606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203149406687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 196468929 + ... + 196469962.

It is an arithmetic number, because the mean of its divisors is an integer number (28291600224).

Almost surely, 2^203149406647 is an apocalyptic number.

203149406647 is a deficient number, since it is larger than the sum of its proper divisors (23183395145).

203149406647 is a wasteful number, since it uses less digits than its factorization.

203149406647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392938949.

The product of its (nonzero) digits is 870912, while the sum is 46.

The spelling of 203149406647 in words is "two hundred three billion, one hundred forty-nine million, four hundred six thousand, six hundred forty-seven".